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changelog.html
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<!DOCTYPE html>
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<h1>Change Log<a class="headerlink" href="#change-log" title="Permalink to this headline">¶</a></h1>
<div class="section" id="version-3-1-6">
<h2>Version 3.1.6<a class="headerlink" href="#version-3-1-6" title="Permalink to this headline">¶</a></h2>
<p>Release Date: Sep 25, 2017</p>
<ul class="simple">
<li><strong>Security</strong><ul>
<li>Fixed a potential object injection in <a class="reference internal" href="libraries/caching.html"><span class="doc">Cache Library</span></a> ‘apc’ driver when <code class="docutils literal"><span class="pre">save()</span></code> is used with <code class="docutils literal"><span class="pre">$raw</span> <span class="pre">=</span> <span class="pre">TRUE</span></code> (thanks to Tomas Bortoli).</li>
</ul>
</li>
<li>General Changes<ul>
<li>Deprecated <a class="reference internal" href="libraries/caching.html"><span class="doc">Cache Library Library</span></a> driver ‘apc’.</li>
<li>Updated the <a class="reference internal" href="libraries/sessions.html"><span class="doc">Session Library</span></a> ‘redis’, ‘memcached’ drivers to reduce the potential of a locking race conditions.</li>
</ul>
</li>
</ul>
<div class="section" id="bug-fixes-for-3-1-6">
<h3>Bug fixes for 3.1.6<a class="headerlink" href="#bug-fixes-for-3-1-6" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Fixed a bug (#5164) - <a class="reference internal" href="libraries/loader.html"><span class="doc">Loader Library</span></a> method <code class="docutils literal"><span class="pre">library()</span></code> ignored requests to load libraries previously assigned to super-object properties named differently than the library name.</li>
<li>Fixed a bug (#5168) - <a class="reference internal" href="database/query_builder.html"><span class="doc">Query Builder</span></a> method <code class="docutils literal"><span class="pre">count_all_results()</span></code> produced erroneous queries on Microsoft SQL Server when <code class="docutils literal"><span class="pre">ORDER</span> <span class="pre">BY</span></code> clauses are cached.</li>
<li>Fixed a bug (#5128) - <a class="reference internal" href="general/profiling.html"><span class="doc">Profiler</span></a> didn’t wrap <code class="docutils literal"><span class="pre">$_SESSION</span></code> and configuration arrays in <code class="docutils literal"><span class="pre"><pre></span></code> tags.</li>
<li>Fixed a bug (#5183) - <a class="reference internal" href="database/index.html"><span class="doc">Database Library</span></a> method <code class="docutils literal"><span class="pre">is_write_type()</span></code> didn’t return TRUE for <code class="docutils literal"><span class="pre">MERGE</span></code> statements.</li>
<li>Fixed a bug where <a class="reference internal" href="libraries/image_lib.html"><span class="doc">Image Manipulation Library</span></a> didn’t escape image source paths passed to NetPBM as shell arguments.</li>
<li>Fixed a bug (#5236) - <a class="reference internal" href="database/query_builder.html"><span class="doc">Query Builder</span></a> methods <code class="docutils literal"><span class="pre">limit()</span></code>, <code class="docutils literal"><span class="pre">offset()</span></code> break SQL Server 2005, 2008 queries with <code class="docutils literal"><span class="pre">"<tablename>".*</span></code> in the <code class="docutils literal"><span class="pre">SELECT</span></code> clause.</li>
<li>Fixed a bug (#5243) - <a class="reference internal" href="database/index.html"><span class="doc">Database Library</span></a> method <code class="docutils literal"><span class="pre">version()</span></code> didn’t work with the ‘pdo/dblib’ driver.</li>
<li>Fixed a bug (#5246) - <a class="reference internal" href="database/transactions.html"><span class="doc">Database transactions</span></a> status wasn’t reset unless <code class="docutils literal"><span class="pre">trans_complete()</span></code> was called.</li>
<li>Fixed a bug (#5260) - <a class="reference internal" href="database/utilities.html"><span class="doc">Database Utilities</span></a> method <code class="docutils literal"><span class="pre">backup()</span></code> generated incorrect <code class="docutils literal"><span class="pre">INSERT</span></code> statements with the ‘mysqli’ driver.</li>
<li>Fixed a bug where <a class="reference internal" href="database/results.html"><span class="doc">Database Results</span></a> method <code class="docutils literal"><span class="pre">field_data()</span></code> didn’t parse field types with the ‘mysqli’ driver.</li>
</ul>
</div>
</div>
<div class="section" id="version-3-1-5">
<h2>Version 3.1.5<a class="headerlink" href="#version-3-1-5" title="Permalink to this headline">¶</a></h2>
<p>Release Date: Jun 19, 2017</p>
<ul class="simple">
<li><strong>Security</strong><ul>
<li><a class="reference internal" href="libraries/form_validation.html"><span class="doc">Form Validation Library</span></a> rule <code class="docutils literal"><span class="pre">valid_email</span></code> could be bypassed if <code class="docutils literal"><span class="pre">idn_to_ascii()</span></code> is available.</li>
</ul>
</li>
<li>General Changes<ul>
<li>Updated <a class="reference internal" href="helpers/form_helper.html"><span class="doc">Form Helper</span></a> function <a class="reference internal" href="helpers/form_helper.html#form_label" title="form_label"><code class="xref php php-func docutils literal"><span class="pre">form_label()</span></code></a> to accept HTML attributes as a string.</li>
</ul>
</li>
</ul>
<div class="section" id="bug-fixes-for-3-1-5">
<h3>Bug fixes for 3.1.5<a class="headerlink" href="#bug-fixes-for-3-1-5" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Fixed a bug (#5070) - <a class="reference internal" href="libraries/email.html"><span class="doc">Email Library</span></a> didn’t properly detect 7-bit encoding.</li>
<li>Fixed a bug (#5084) - <a class="reference internal" href="libraries/xmlrpc.html"><span class="doc">XML-RPC Library</span></a> errored because of a variable name typo.</li>
<li>Fixed a bug (#5108) - <a class="reference internal" href="helpers/inflector_helper.html"><span class="doc">Inflector Helper</span></a> function <a class="reference internal" href="helpers/inflector_helper.html#singular" title="singular"><code class="xref php php-func docutils literal"><span class="pre">singular()</span></code></a> didn’t properly handle ‘quizzes’.</li>
<li>Fixed a regression (#5131) - private controller methods triggered PHP errors instead of a 404 response.</li>
<li>Fixed a bug (#5150) - <a class="reference internal" href="database/forge.html"><span class="doc">Database Forge</span></a> method <code class="docutils literal"><span class="pre">modify_column()</span></code> triggered an error while renaming columns with the ‘oci8’, ‘pdo/oci’ drivers.</li>
<li>Fixed a bug (#5155) - <a class="reference internal" href="database/query_builder.html"><span class="doc">Query Builder</span></a> method <code class="docutils literal"><span class="pre">count_all_results()</span></code> returned incorrect result for queries using <code class="docutils literal"><span class="pre">LIMIT</span></code>, <code class="docutils literal"><span class="pre">OFFSET</span></code>.</li>
</ul>
</div>
</div>
<div class="section" id="version-3-1-4">
<h2>Version 3.1.4<a class="headerlink" href="#version-3-1-4" title="Permalink to this headline">¶</a></h2>
<p>Release Date: Mar 20, 2017</p>
<ul class="simple">
<li><strong>Security</strong><ul>
<li>Fixed a header injection vulnerability in <a class="reference internal" href="general/common_functions.html"><span class="doc">common function</span></a> <a class="reference internal" href="general/common_functions.html#set_status_header" title="set_status_header"><code class="xref php php-func docutils literal"><span class="pre">set_status_header()</span></code></a> under Apache (thanks to Guillermo Caminer from <a class="reference external" href="https://flowgate.net/">Flowgate</a>).</li>
<li>Fixed byte-safety issues in <a class="reference internal" href="libraries/encrypt.html"><span class="doc">Encrypt Library</span></a> (DEPRECATED) when <code class="docutils literal"><span class="pre">mbstring.func_overload</span></code> is enabled.</li>
<li>Fixed byte-safety issues in <a class="reference internal" href="libraries/encryption.html"><span class="doc">Encryption Library</span></a> when <code class="docutils literal"><span class="pre">mbstring.func_overload</span></code> is enabled.</li>
<li>Fixed byte-safety issues in <a class="reference internal" href="general/compatibility_functions.html"><span class="doc">compatibility functions</span></a> <code class="docutils literal"><span class="pre">password_hash()</span></code>, <code class="docutils literal"><span class="pre">hash_pbkdf2()</span></code> when <code class="docutils literal"><span class="pre">mbstring.func_overload</span></code> is enabled.</li>
<li>Updated <a class="reference internal" href="libraries/encrypt.html"><span class="doc">Encrypt Library</span></a> (DEPRECATED) to call <code class="docutils literal"><span class="pre">mcrypt_create_iv()</span></code> with <code class="docutils literal"><span class="pre">MCRYPT_DEV_URANDOM</span></code>.</li>
</ul>
</li>
<li>General Changes<ul>
<li>Updated the <a class="reference internal" href="libraries/image_lib.html"><span class="doc">Image Manipulation Library</span></a> to work-around an issue with some JPEGs when using GD.</li>
</ul>
</li>
</ul>
<div class="section" id="bug-fixes-for-3-1-4">
<h3>Bug fixes for 3.1.4<a class="headerlink" href="#bug-fixes-for-3-1-4" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Fixed a regression (#4975) - <a class="reference internal" href="libraries/loader.html"><span class="doc">Loader Library</span></a> couldn’t handle objects passed as view variables.</li>
<li>Fixed a bug (#4977) - <a class="reference internal" href="libraries/loader.html"><span class="doc">Loader Library</span></a> method <code class="docutils literal"><span class="pre">helper()</span></code> could accept any character as a filename extension separator.</li>
<li>Fixed a regression where the <a class="reference internal" href="libraries/sessions.html"><span class="doc">Session Library</span></a> would fail on a <code class="docutils literal"><span class="pre">session_regenerate_id(TRUE)</span></code> call with the ‘database’ driver.</li>
<li>Fixed a bug (#4987) - <a class="reference internal" href="database/query_builder.html"><span class="doc">Query Builder</span></a> caching didn’t keep track of table aliases.</li>
<li>Fixed a bug where <a class="reference internal" href="helpers/text_helper.html"><span class="doc">Text Helper</span></a> function <code class="docutils literal"><span class="pre">ascii_to_entities()</span></code> wasn’t byte-safe when <code class="docutils literal"><span class="pre">mbstring.func_overload</span></code> is enabled.</li>
<li>Fixed a bug where <code class="docutils literal"><span class="pre">CI_Log</span></code>, <code class="docutils literal"><span class="pre">CI_Output</span></code>, <code class="docutils literal"><span class="pre">CI_Email</span></code> and <code class="docutils literal"><span class="pre">CI_Zip</span></code> didn’t handle strings in a byte-safe manner when <code class="docutils literal"><span class="pre">mbstring.func_overload</span></code> is enabled.</li>
<li>Fixed a bug where <a class="reference internal" href="libraries/sessions.html"><span class="doc">Session Library</span></a> didn’t read session data in a byte-safe manner when <code class="docutils literal"><span class="pre">mbstring.func_overload</span></code> is enabled.</li>
<li>Fixed a bug (#4990) - <a class="reference internal" href="general/profiling.html"><span class="doc">Profiler</span></a> didn’t close <code class="docutils literal"><span class="pre"><pre></span></code> tags it generated.</li>
<li>Fixed a bug (#4990) - <a class="reference internal" href="general/profiling.html"><span class="doc">Profiler</span></a> didn’t HTML-escape quotes for <code class="docutils literal"><span class="pre">$_SESSION</span></code> variables.</li>
<li>Fixed a bug where <a class="reference internal" href="libraries/input.html"><span class="doc">Input Library</span></a> method <code class="docutils literal"><span class="pre">set_cookie()</span></code> didn’t allow its <em>httponly</em> and <em>secure</em> parameters to be overriden to <code class="docutils literal"><span class="pre">FALSE</span></code>.</li>
<li>Fixed a bug (#5006) - <a class="reference internal" href="general/common_functions.html"><span class="doc">common function</span></a> <a class="reference internal" href="general/common_functions.html#get_mimes" title="get_mimes"><code class="xref php php-func docutils literal"><span class="pre">get_mimes()</span></code></a> didn’t load <em>application/config/mimes.php</em> if an environment specific config exists.</li>
<li>Fixed a bug (#5006) - <a class="reference internal" href="general/common_functions.html"><span class="doc">common function</span></a> <a class="reference internal" href="general/common_functions.html#remove_invisible_characters" title="remove_invisible_characters"><code class="xref php php-func docutils literal"><span class="pre">remove_invisible_characters()</span></code></a> didn’t remove URL-encoded <code class="docutils literal"><span class="pre">0x7F</span></code>.</li>
<li>Fixed a bug (#4815) - <a class="reference internal" href="database/index.html"><span class="doc">Database Library</span></a> stripped URL-encoded sequences while escaping strings with the ‘mssql’ driver.</li>
<li>Fixed a bug (#5044) - <a class="reference internal" href="helpers/html_helper.html"><span class="doc">HTML Helper</span></a> function <a class="reference internal" href="helpers/html_helper.html#img" title="img"><code class="xref php php-func docutils literal"><span class="pre">img()</span></code></a> didn’t accept <code class="docutils literal"><span class="pre">data:</span></code> URI schemes for the image source.</li>
<li>Fixed a bug (#5050) - <a class="reference internal" href="database/index.html"><span class="doc">Database Library</span></a> tried to access an undefined property in a number of error handling cases.</li>
<li>Fixed a bug (#5057) - <a class="reference internal" href="database/index.html"><span class="doc">Database</span></a> driver ‘postgre’ didn’t actually apply extra options (such as ‘connect_timeout’) to its DSN.</li>
</ul>
</div>
</div>
<div class="section" id="version-3-1-3">
<h2>Version 3.1.3<a class="headerlink" href="#version-3-1-3" title="Permalink to this headline">¶</a></h2>
<p>Release Date: Jan 09, 2017</p>
<ul class="simple">
<li><strong>Security</strong><ul>
<li>Fixed an XSS vulnerability in <a class="reference internal" href="libraries/security.html"><span class="doc">Security Library</span></a> method <code class="docutils literal"><span class="pre">xss_clean()</span></code>.</li>
<li>Fixed a possible file inclusion vulnerability in <a class="reference internal" href="libraries/loader.html"><span class="doc">Loader Library</span></a> method <code class="docutils literal"><span class="pre">vars()</span></code>.</li>
<li>Fixed a possible remote code execution vulnerability in the <a class="reference internal" href="libraries/email.html"><span class="doc">Email Library</span></a> when ‘mail’ or ‘sendmail’ are used (thanks to Paul Buonopane from <a class="reference external" href="https://www.namepros.com/">NamePros</a>).</li>
<li>Added protection against timing side-channel attacks in <a class="reference internal" href="libraries/security.html"><span class="doc">Security Library</span></a> method <code class="docutils literal"><span class="pre">csrf_verify()</span></code>.</li>
<li>Added protection against BREACH attacks targeting the CSRF token field generated by <a class="reference internal" href="helpers/form_helper.html"><span class="doc">Form Helper</span></a> function <a class="reference internal" href="helpers/form_helper.html#form_open" title="form_open"><code class="xref php php-func docutils literal"><span class="pre">form_open()</span></code></a>.</li>
</ul>
</li>
<li>General Changes<ul>
<li>Deprecated <code class="docutils literal"><span class="pre">$config['allow_get_array']</span></code>.</li>
<li>Deprecated <code class="docutils literal"><span class="pre">$config['standardize_newlines']</span></code>.</li>
<li>Deprecated <a class="reference internal" href="helpers/date_helper.html"><span class="doc">Date Helper</span></a> function <a class="reference internal" href="helpers/date_helper.html#nice_date" title="nice_date"><code class="xref php php-func docutils literal"><span class="pre">nice_date()</span></code></a>.</li>
</ul>
</li>
</ul>
<div class="section" id="bug-fixes-for-3-1-3">
<h3>Bug fixes for 3.1.3<a class="headerlink" href="#bug-fixes-for-3-1-3" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Fixed a bug (#4886) - <a class="reference internal" href="database/index.html"><span class="doc">Database Library</span></a> didn’t differentiate bind markers inside double-quoted strings in queries.</li>
<li>Fixed a bug (#4890) - <a class="reference internal" href="libraries/xmlrpc.html"><span class="doc">XML-RPC Library</span></a> didn’t work on PHP 7.</li>
<li>Fixed a regression (#4887) - <a class="reference internal" href="libraries/file_uploading.html"><span class="doc">File Uploading Library</span></a> triggered fatal errors due to numerous PHP distribution channels (XAMPP and cPanel confirmed) explicitly disabling ext/fileinfo by default.</li>
<li>Fixed a bug (#4679) - <a class="reference internal" href="libraries/input.html"><span class="doc">Input Library</span></a> method <code class="docutils literal"><span class="pre">ip_address()</span></code> didn’t properly resolve <code class="docutils literal"><span class="pre">$config['proxy_ips']</span></code> IPv6 addresses.</li>
<li>Fixed a bug (#4902) - <a class="reference internal" href="libraries/image_lib.html"><span class="doc">Image Manipulation Library</span></a> processing via ImageMagick didn’t work.</li>
<li>Fixed a bug (#4905) - <a class="reference internal" href="libraries/loader.html"><span class="doc">Loader Library</span></a> didn’t take into account possible user-provided directory paths when loading helpers.</li>
<li>Fixed a bug (#4916) - <a class="reference internal" href="libraries/sessions.html"><span class="doc">Session Library</span></a> with <code class="docutils literal"><span class="pre">sess_match_ip</span></code> enabled was unusable for IPv6 clients when using the ‘database’ driver on MySQL 5.7.5+.</li>
<li>Fixed a bug (#4917) - <a class="reference internal" href="helpers/date_helper.html"><span class="doc">Date Helper</span></a> function <a class="reference internal" href="helpers/date_helper.html#nice_date" title="nice_date"><code class="xref php php-func docutils literal"><span class="pre">nice_date()</span></code></a> didn’t handle YYYYMMDD inputs properly.</li>
<li>Fixed a bug (#4923) - <a class="reference internal" href="libraries/sessions.html"><span class="doc">Session Library</span></a> could execute an erroneous SQL query with the ‘database’ driver, if the lock attempt times out.</li>
<li>Fixed a bug (#4927) - <a class="reference internal" href="libraries/output.html"><span class="doc">Output Library</span></a> method <code class="docutils literal"><span class="pre">get_header()</span></code> returned the first matching header, regardless of whether it would be replaced by a second <code class="docutils literal"><span class="pre">set_header()</span></code> call.</li>
<li>Fixed a bug (#4844) - <a class="reference internal" href="libraries/email.html"><span class="doc">Email Library</span></a> didn’t apply <code class="docutils literal"><span class="pre">escapeshellarg()</span></code> to the while passing the Sendmail <code class="docutils literal"><span class="pre">-f</span></code> parameter through <code class="docutils literal"><span class="pre">popen()</span></code>.</li>
<li>Fixed a bug (#4928) - the bootstrap file didn’t check if <em>config/constants.php</em> exists before trying to load it.</li>
<li>Fixed a bug (#4937) - <a class="reference internal" href="libraries/image_lib.html"><span class="doc">Image Manipulation Library</span></a> method <code class="docutils literal"><span class="pre">initialize()</span></code> didn’t translate <em>new_image</em> inputs to absolute paths.</li>
<li>Fixed a bug (#4941) - <a class="reference internal" href="database/query_builder.html"><span class="doc">Query Builder</span></a> method <code class="docutils literal"><span class="pre">order_by()</span></code> didn’t work with ‘RANDOM’ under the ‘pdo/sqlite’ driver.</li>
<li>Fixed a regression (#4892) - <a class="reference internal" href="database/query_builder.html"><span class="doc">Query Builder</span></a> method <code class="docutils literal"><span class="pre">update_batch()</span></code> didn’t properly handle identifier escaping.</li>
<li>Fixed a bug (#4953) - <a class="reference internal" href="database/forge.html"><span class="doc">Database Forge</span></a> method <code class="docutils literal"><span class="pre">create_table()</span></code> didn’t update an internal tables list cache if it exists but is empty.</li>
<li>Fixed a bug (#4958) - <a class="reference internal" href="database/query_builder.html"><span class="doc">Query Builder</span></a> method <code class="docutils literal"><span class="pre">count_all_results()</span></code> didn’t take into account cached <code class="docutils literal"><span class="pre">ORDER</span> <span class="pre">BY</span></code> clauses.</li>
<li>Fixed a bug (#4804) - <a class="reference internal" href="database/query_builder.html"><span class="doc">Query Builder</span></a> method <code class="docutils literal"><span class="pre">insert_batch()</span></code> could fail if the input array pointer was modified.</li>
<li>Fixed a bug (#4962) - <a class="reference internal" href="database/forge.html"><span class="doc">Database Force</span></a> method <code class="docutils literal"><span class="pre">alter_table()</span></code> would fail with the ‘oci8’ driver.</li>
<li>Fixed a bug (#4457) - <a class="reference internal" href="libraries/image_lib.html"><span class="doc">Image Manipulation Library</span></a> method <code class="docutils literal"><span class="pre">get_image_properties()</span></code> didn’t detect invalid images.</li>
<li>Fixed a bug (#4765) - <a class="reference internal" href="libraries/email.html"><span class="doc">Email Library</span></a> didn’t send the <code class="docutils literal"><span class="pre">User-Agent</span></code> header without a prior call to <code class="docutils literal"><span class="pre">clear()</span></code>.</li>
</ul>
</div>
</div>
<div class="section" id="version-3-1-2">
<h2>Version 3.1.2<a class="headerlink" href="#version-3-1-2" title="Permalink to this headline">¶</a></h2>
<p>Release Date: Oct 28, 2016</p>
<ul class="simple">
<li><strong>Security</strong><ul>
<li>Fixed a number of new vulnerabilities in <a class="reference internal" href="libraries/security.html"><span class="doc">Security Library</span></a> method <code class="docutils literal"><span class="pre">xss_clean()</span></code>.</li>
</ul>
</li>
<li>General Changes<ul>
<li>Allowed PHP 4-style constructors (<code class="docutils literal"><span class="pre">Matching_name::Matching_name()</span></code> methods) to be used as routes, if there’s a <code class="docutils literal"><span class="pre">__construct()</span></code> to override them.</li>
</ul>
</li>
</ul>
<div class="section" id="bug-fixes-for-3-1-2">
<h3>Bug fixes for 3.1.2<a class="headerlink" href="#bug-fixes-for-3-1-2" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Fixed a regression (#4874) - <a class="reference internal" href="libraries/sessions.html"><span class="doc">Session Library</span></a> didn’t take into account <code class="docutils literal"><span class="pre">session.hash_bits_per_character</span></code> when validating session IDs.</li>
<li>Fixed a bug (#4871) - <a class="reference internal" href="database/query_builder.html"><span class="doc">Query Builder</span></a> method <code class="docutils literal"><span class="pre">update_batch()</span></code> didn’t properly handle identifier escaping.</li>
<li>Fixed a bug (#4884) - <a class="reference internal" href="database/query_builder.html"><span class="doc">Query Builder</span></a> didn’t properly parse field names ending in ‘is’ when used inside WHERE and HAVING statements.</li>
<li>Fixed a bug where <code class="docutils literal"><span class="pre">CI_Log</span></code>, <code class="docutils literal"><span class="pre">CI_Output</span></code>, <code class="docutils literal"><span class="pre">CI_Email</span></code> and <code class="docutils literal"><span class="pre">CI_Zip</span></code> didn’t handle strings in a byte-safe manner when <code class="docutils literal"><span class="pre">mbstring.func_overload</span></code> is enabled.</li>
</ul>
</div>
</div>
<div class="section" id="version-3-1-1">
<h2>Version 3.1.1<a class="headerlink" href="#version-3-1-1" title="Permalink to this headline">¶</a></h2>
<p>Release Date: Oct 22, 2016</p>
<ul class="simple">
<li><strong>Security</strong><ul>
<li>Fixed a flaw in <a class="reference internal" href="libraries/security.html"><span class="doc">Security Library</span></a> method <code class="docutils literal"><span class="pre">entity_decode()</span></code> (used by <code class="docutils literal"><span class="pre">xss_clean()</span></code>) that affects HTML 5 entities when using PHP 5.3.</li>
</ul>
</li>
<li>General Changes<ul>
<li>Added <code class="docutils literal"><span class="pre">E_PARSE</span></code> to the list of error levels detected by the shutdown handler.</li>
<li>Updated <a class="reference internal" href="helpers/inflector_helper.html"><span class="doc">Inflector Helper</span></a> <a class="reference internal" href="helpers/inflector_helper.html#is_countable" title="is_countable"><code class="xref php php-func docutils literal"><span class="pre">is_countable()</span></code></a> with more words.</li>
<li>Updated <a class="reference internal" href="general/common_functions.html"><span class="doc">common function</span></a> <a class="reference internal" href="general/common_functions.html#set_status_header" title="set_status_header"><code class="xref php php-func docutils literal"><span class="pre">set_status_header()</span></code></a> with new status codes from IETF RFCs
<a class="reference external" href="https://tools.ietf.org/html/rfc2817">2817</a> (426)
and <a class="reference external" href="https://tools.ietf.org/html/rfc6585">6585</a> (428, 429, 431, 511).</li>
</ul>
</li>
</ul>
<div class="section" id="bug-fixes-for-3-1-1">
<h3>Bug fixes for 3.1.1<a class="headerlink" href="#bug-fixes-for-3-1-1" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Fixed a bug (#4732) - <a class="reference internal" href="libraries/sessions.html"><span class="doc">Session Library</span></a> triggered errors while writing data for a newly-created sessions with the ‘memcached’ driver.</li>
<li>Fixed a regression (#4736) - <a class="reference internal" href="libraries/image_lib.html"><span class="doc">Image Manipulation Library</span></a> processing via ImageMagick didn’t work.</li>
<li>Fixed a bug (#4737) - <a class="reference internal" href="database/query_builder.html"><span class="doc">Query Builder</span></a> didn’t add an <code class="docutils literal"><span class="pre">OFFSET</span></code> when <code class="docutils literal"><span class="pre">LIMIT</span></code> is zero or unused.</li>
<li>Fixed a regression (#4739) - <a class="reference internal" href="libraries/email.html"><span class="doc">Email Library</span></a> doesn’t properly separate attachment bodies from headers.</li>
<li>Fixed a bug (#4754) - <a class="reference internal" href="libraries/unit_testing.html"><span class="doc">Unit Testing Library</span></a> method <code class="docutils literal"><span class="pre">result()</span></code> didn’t translate <code class="docutils literal"><span class="pre">res_datatype</span></code>.</li>
<li>Fixed a bug (#4759) - <a class="reference internal" href="libraries/form_validation.html"><span class="doc">Form Validation</span></a>, <a class="reference internal" href="libraries/trackback.html"><span class="doc">Trackback</span></a> and <a class="reference internal" href="libraries/xmlrpc.html"><span class="doc">XML-RPC</span></a> libraries treated URI schemes in a case-sensitive manner.</li>
<li>Fixed a bug (#4762) - <a class="reference internal" href="libraries/caching.html"><span class="doc">Cache Library</span></a> ‘file’ driver method <code class="docutils literal"><span class="pre">get_metadata()</span></code> checked TTL time against <code class="docutils literal"><span class="pre">mtime</span></code> instead of the cache item’s creation time.</li>
<li>Fixed a bug where <a class="reference internal" href="libraries/file_uploading.html"><span class="doc">File Uploading Library</span></a> generated error messages on PHP 7.1.</li>
<li>Fixed a bug (#4780) - <a class="reference internal" href="general/compatibility_functions.html"><span class="doc">compatibility function</span></a> <code class="docutils literal"><span class="pre">hex2bin()</span></code> didn’t reject inputs of type “resource”.</li>
<li>Fixed a bug (#4787) - <a class="reference internal" href="libraries/form_validation.html"><span class="doc">Form Validation Library</span></a> method <code class="docutils literal"><span class="pre">valid_email()</span></code> triggered <code class="docutils literal"><span class="pre">E_WARNING</span></code> when input emails have empty domain names.</li>
<li>Fixed a bug (#4805) - <a class="reference internal" href="database/index.html"><span class="doc">Database</span></a> driver ‘mysqli’ didn’t use the <code class="docutils literal"><span class="pre">MYSQLI_CLIENT_SSL_DONT_VERIFY_SERVER_CERT</span></code> flag properly.</li>
<li>Fixed a bug (#4808) - <a class="reference internal" href="database/index.html"><span class="doc">Database</span></a> method <code class="docutils literal"><span class="pre">is_write_type()</span></code> only looked at the first line of a queries using <code class="docutils literal"><span class="pre">RETURNING</span></code> with the ‘postgre’, ‘pdo/pgsql’, ‘odbc’ and ‘pdo/odbc’ drivers.</li>
<li>Fixed a bug where <a class="reference internal" href="database/query_builder.html"><span class="doc">Query Builder</span></a> method <code class="docutils literal"><span class="pre">insert_batch()</span></code> tried to execute an unsupported SQL query with the ‘ibase’ and ‘pdo/firebird’ drivers.</li>
<li>Fixed a bug (#4809) - <a class="reference internal" href="database/index.html"><span class="doc">Database</span></a> driver ‘pdo/mysql’ didn’t turn off <code class="docutils literal"><span class="pre">AUTOCOMMIT</span></code> when starting a transaction.</li>
<li>Fixed a bug (#4822) - <a class="reference internal" href="helpers/captcha_helper.html"><span class="doc">CAPTCHA Helper</span></a> didn’t clear expired PNG images.</li>
<li>Fixed a bug (#4823) - <a class="reference internal" href="libraries/sessions.html"><span class="doc">Session Library</span></a> ‘files’ driver could enter an infinite loop if <code class="docutils literal"><span class="pre">mbstring.func_overload</span></code> is enabled.</li>
<li>Fixed a bug (#4851) - <a class="reference internal" href="database/forge.html"><span class="doc">Database Forge</span></a> didn’t quote schema names passed to its <code class="docutils literal"><span class="pre">create_database()</span></code> method.</li>
<li>Fixed a bug (#4863) - <a class="reference internal" href="libraries/table.html"><span class="doc">HTML Table Library</span></a> method <code class="docutils literal"><span class="pre">set_caption()</span></code> was missing method chaining support.</li>
<li>Fixed a bug (#4843) - <a class="reference internal" href="libraries/xmlrpc.html"><span class="doc">XML-RPC Library</span></a> client class didn’t set a read/write socket timeout.</li>
<li>Fixed a bug (#4865) - uncaught exceptions didn’t set the HTTP Response status code to 500 unless <code class="docutils literal"><span class="pre">display_errors</span></code> was turned On.</li>
<li>Fixed a bug (#4830) - <a class="reference internal" href="libraries/sessions.html"><span class="doc">Session Library</span></a> didn’t take into account the new session INI settings in PHP 7.1.</li>
</ul>
</div>
</div>
<div class="section" id="version-3-1-0">
<h2>Version 3.1.0<a class="headerlink" href="#version-3-1-0" title="Permalink to this headline">¶</a></h2>
<p>Release Date: July 26, 2016</p>
<ul class="simple">
<li><strong>Security</strong><ul>
<li>Fixed an SQL injection in the ‘odbc’ database driver.</li>
<li>Updated <a class="reference internal" href="helpers/path_helper.html#set_realpath" title="set_realpath"><code class="xref php php-func docutils literal"><span class="pre">set_realpath()</span></code></a> <a class="reference internal" href="helpers/path_helper.html"><span class="doc">Path Helper</span></a> function to filter-out <code class="docutils literal"><span class="pre">php://</span></code> wrapper inputs.</li>
<li>Officially dropped any kind of support for PHP 5.2.x and anything under 5.3.7.</li>
</ul>
</li>
<li>General Changes<ul>
<li>Updated <a class="reference internal" href="libraries/image_lib.html"><span class="doc">Image Manipulation Library</span></a> to validate <em>width</em> and <em>height</em> configuration values.</li>
<li>Updated <a class="reference internal" href="libraries/encryption.html"><span class="doc">Encryption Library</span></a> to always prefer <code class="docutils literal"><span class="pre">random_bytes()</span></code> when it is available.</li>
<li>Updated <a class="reference internal" href="libraries/sessions.html"><span class="doc">Session Library</span></a> to log ‘debug’ messages when using fallbacks to <em>session.save_path</em> (php.ini) or ‘sess_use_database’, ‘sess_table_name’ settings.</li>
<li>Added a ‘LONGTEXT’ to ‘STRING’ alias to <a class="reference internal" href="database/forge.html"><span class="doc">Database Forge</span></a> for the ‘cubrid’, ‘pdo/cubrid’ drivers.</li>
<li>Added ‘TINYINT’, ‘MEDIUMINT’, ‘INT’ and ‘BIGINT’ aliases to ‘NUMBER’ to <a class="reference internal" href="database/forge.html"><span class="doc">Database Forge</span></a> for the ‘oci8’, ‘pdo/oci’ drivers.</li>
<li><a class="reference internal" href="general/compatibility_functions.html#password_hash" title="password_hash"><code class="xref php php-func docutils literal"><span class="pre">password_hash()</span></code></a> <a class="reference internal" href="general/compatibility_functions.html"><span class="doc">compatibility function</span></a> changes:<ul>
<li>Changed salt-generation logic to prefer <code class="docutils literal"><span class="pre">random_bytes()</span></code> when it is available.</li>
<li>Changed salt-generation logic to prefer direct access to <em>/dev/urandom</em> over <code class="docutils literal"><span class="pre">openssl_random_pseudo_bytes()</span></code>.</li>
<li>Changed salt-generation logic to error if <code class="docutils literal"><span class="pre">openssl_random_pseudo_bytes()</span></code> sets its <code class="docutils literal"><span class="pre">$crypto_strong</span></code> flag to FALSE.</li>
</ul>
</li>
</ul>
</li>
</ul>
<div class="section" id="bug-fixes-for-3-1-0">
<h3>Bug fixes for 3.1.0<a class="headerlink" href="#bug-fixes-for-3-1-0" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Fixed a bug where <a class="reference internal" href="libraries/image_lib.html"><span class="doc">Image Manipulation Library</span></a> didn’t escape image source paths passed to ImageMagick as shell arguments.</li>
<li>Fixed a bug (#861) - <a class="reference internal" href="database/forge.html"><span class="doc">Database Forge</span></a> method <code class="docutils literal"><span class="pre">create_table()</span></code> incorrectly accepts field width constraints for MSSQL/SQLSRV integer-type columns.</li>
<li>Fixed a bug (#4562) - <a class="reference internal" href="libraries/caching.html"><span class="doc">Cache Library</span></a> didn’t check if <code class="docutils literal"><span class="pre">Memcached::quit()</span></code> is available before calling it.</li>
<li>Fixed a bug (#4563) - <a class="reference internal" href="libraries/input.html"><span class="doc">Input Library</span></a> method <code class="docutils literal"><span class="pre">request_headers()</span></code> ignores <code class="docutils literal"><span class="pre">$xss_clean</span></code> parameter value after first call.</li>
<li>Fixed a bug (#4605) - <a class="reference internal" href="libraries/config.html"><span class="doc">Config Library</span></a> method <code class="docutils literal"><span class="pre">site_url()</span></code> stripped trailing slashes from relative URIs passed to it.</li>
<li>Fixed a bug (#4613) - <a class="reference internal" href="libraries/config.html"><span class="doc">Email Library</span></a> failed to send multiple emails via SMTP due to “already authenticated” errors when keep-alive is enabled.</li>
<li>Fixed a bug (#4633) - <a class="reference internal" href="libraries/form_validation.html"><span class="doc">Form Validation Library</span></a> ignored multiple “callback” rules for empty, non-required fields.</li>
<li>Fixed a bug (#4637) - <a class="reference internal" href="database/index.html"><span class="doc">Database</span></a> method <code class="docutils literal"><span class="pre">error()</span></code> returned <code class="docutils literal"><span class="pre">FALSE</span></code> with the ‘oci8’ driver if there was no error.</li>
<li>Fixed a bug (#4647) - <a class="reference internal" href="database/query_builder.html"><span class="doc">Query Builder</span></a> method <code class="docutils literal"><span class="pre">count_all_results()</span></code> doesn’t take into account <code class="docutils literal"><span class="pre">GROUP</span> <span class="pre">BY</span></code> clauses while deciding whether to do a subquery or not.</li>
<li>Fixed a bug where <a class="reference internal" href="libraries/sessions.html"><span class="doc">Session Library</span></a> ‘redis’ driver didn’t properly detect if a connection is properly closed on PHP 5.x.</li>
<li>Fixed a bug (#4583) - <a class="reference internal" href="libraries/email.html"><span class="doc">Email Library</span></a> didn’t properly handle inline attachments in HTML emails.</li>
<li>Fixed a bug where <a class="reference internal" href="database/index.html"><span class="doc">Database</span></a> method <code class="docutils literal"><span class="pre">db_select()</span></code> didn’t clear metadata cached for the previously used database.</li>
<li>Fixed a bug (#4675) - <a class="reference internal" href="helpers/file_helper.html"><span class="doc">File Helper</span></a> function <a class="reference internal" href="helpers/file_helper.html#delete_files" title="delete_files"><code class="xref php php-func docutils literal"><span class="pre">delete_files()</span></code></a> treated symbolic links as regular directories.</li>
<li>Fixed a bug (#4674) - <a class="reference internal" href="database/index.html"><span class="doc">Database</span></a> driver ‘dblib’ triggered E_WARNING messages while connecting.</li>
<li>Fixed a bug (#4678) - <a class="reference internal" href="database/forge.html"><span class="doc">Database Forge</span></a> tried to use unsupported <code class="docutils literal"><span class="pre">IF</span> <span class="pre">NOT</span> <span class="pre">EXISTS</span></code> clause when creating tables on Oracle.</li>
<li>Fixed a bug (#4691) - <a class="reference internal" href="libraries/file_uploading.html"><span class="doc">File Uploading Library</span></a> method <code class="docutils literal"><span class="pre">data()</span></code> returns wrong ‘raw_name’ when the filename extension is also contained in the raw filename.</li>
<li>Fixed a bug (#4679) - <a class="reference internal" href="libraries/input.html"><span class="doc">Input Library</span></a> method <code class="docutils literal"><span class="pre">ip_address()</span></code> errors with a matching <code class="docutils literal"><span class="pre">$config['proxy_ips']</span></code> IPv6 address.</li>
<li>Fixed a bug (#4695) - <a class="reference internal" href="libraries/user_agent.html"><span class="doc">User Agent Library</span></a> didn’t load the <em>config/user_agents.php</em> file when there’s no <code class="docutils literal"><span class="pre">User-Agent</span></code> HTTP request header.</li>
<li>Fixed a bug (#4713) - <a class="reference internal" href="database/query_builder.html"><span class="doc">Query Builder</span></a> methods <code class="docutils literal"><span class="pre">insert_batch()</span></code>, <code class="docutils literal"><span class="pre">update_batch()</span></code> could return wrong affected rows count.</li>
<li>Fixed a bug (#4712) - <a class="reference internal" href="libraries/email.html"><span class="doc">Email Library</span></a> doesn’t sent <code class="docutils literal"><span class="pre">RSET</span></code> to SMTP servers after a failure and while using keep-alive.</li>
<li>Fixed a bug (#4724) - <a class="reference internal" href="general/common_functions.html"><span class="doc">Common function</span></a> <a class="reference internal" href="general/common_functions.html#is_https" title="is_https"><code class="xref php php-func docutils literal"><span class="pre">is_https()</span></code></a> compared the <code class="docutils literal"><span class="pre">X-Forwarded-Proto</span></code> HTTP header case-sensitively.</li>
<li>Fixed a bug (#4725) - <a class="reference internal" href="general/common_functions.html"><span class="doc">Common function</span></a> <a class="reference internal" href="general/common_functions.html#remove_invisible_characters" title="remove_invisible_characters"><code class="xref php php-func docutils literal"><span class="pre">remove_invisible_characters()</span></code></a> searched case-sensitively for URL-encoded characters.</li>
</ul>
</div>
</div>
<div class="section" id="version-3-0-6">
<h2>Version 3.0.6<a class="headerlink" href="#version-3-0-6" title="Permalink to this headline">¶</a></h2>
<p>Release Date: March 21, 2016</p>
<ul class="simple">
<li>General Changes<ul>
<li>Added a destructor to <a class="reference internal" href="libraries/caching.html"><span class="doc">Cache Library</span></a> ‘memcached’ driver to ensure that Memcache(d) connections are properly closed.</li>
<li>Deprecated <a class="reference internal" href="libraries/form_validation.html"><span class="doc">Form Validation Library</span></a> method <code class="docutils literal"><span class="pre">prep_for_form()</span></code>.</li>
</ul>
</li>
</ul>
<div class="section" id="bug-fixes-for-3-0-6">
<h3>Bug fixes for 3.0.6<a class="headerlink" href="#bug-fixes-for-3-0-6" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Fixed a bug (#4516) - <a class="reference internal" href="libraries/form_validation.html"><span class="doc">Form Validation Library</span></a> always accepted empty array inputs.</li>
<li>Fixed a bug where <a class="reference internal" href="libraries/sessions.html"><span class="doc">Session Library</span></a> allowed accessing <code class="docutils literal"><span class="pre">$_SESSION</span></code> values as class properties but <code class="docutils literal"><span class="pre">isset()</span></code> didn’t work on them.</li>
<li>Fixed a bug where <a class="reference internal" href="libraries/form_validation.html"><span class="doc">Form Validation Library</span></a> modified the <code class="docutils literal"><span class="pre">$_POST</span></code> array when the data being validated was actually provided via <code class="docutils literal"><span class="pre">set_data()</span></code>.</li>
<li>Fixed a bug (#4539) - <a class="reference internal" href="libraries/migration.html"><span class="doc">Migration Library</span></a> applied migrations before validating that all migrations within the requested version range are valid.</li>
<li>Fixed a bug (#4539) - <a class="reference internal" href="libraries/migration.html"><span class="doc">Migration Library</span></a> triggered failures for migrations that are out of the requested version range.</li>
</ul>
</div>
</div>
<div class="section" id="version-3-0-5">
<h2>Version 3.0.5<a class="headerlink" href="#version-3-0-5" title="Permalink to this headline">¶</a></h2>
<p>Release Date: March 11, 2016</p>
<ul class="simple">
<li>Core<ul>
<li>Changed <a class="reference internal" href="libraries/loader.html"><span class="doc">Loader Library</span></a> to allow <code class="docutils literal"><span class="pre">$autoload['drivers']</span></code> assigning with custom property names.</li>
<li>Changed <a class="reference internal" href="libraries/loader.html"><span class="doc">Loader Library</span></a> to ignore variables prefixed with ‘_ci_’ when loading views.</li>
</ul>
</li>
<li>General Changes<ul>
<li>Updated the <a class="reference internal" href="libraries/sessions.html"><span class="doc">Session Library</span></a> to produce friendlier error messages on failures with drivers other than ‘files’.</li>
</ul>
</li>
<li><a class="reference internal" href="database/query_builder.html"><span class="doc">Query Builder</span></a><ul>
<li>Added a <code class="docutils literal"><span class="pre">$batch_size</span></code> parameter to the <code class="docutils literal"><span class="pre">insert_batch()</span></code> method (defaults to 100).</li>
<li>Added a <code class="docutils literal"><span class="pre">$batch_size</span></code> parameter to the <code class="docutils literal"><span class="pre">update_batch()</span></code> method (defaults to 100).</li>
</ul>
</li>
</ul>
<div class="section" id="bug-fixes-for-3-0-5">
<h3>Bug fixes for 3.0.5<a class="headerlink" href="#bug-fixes-for-3-0-5" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Fixed a bug (#4391) - <a class="reference internal" href="libraries/email.html"><span class="doc">Email Library</span></a> method <code class="docutils literal"><span class="pre">reply_to()</span></code> didn’t apply Q-encoding.</li>
<li>Fixed a bug (#4384) - <a class="reference internal" href="libraries/pagination.html"><span class="doc">Pagination Library</span></a> ignored (possible) <em>cur_page</em> configuration value.</li>
<li>Fixed a bug (#4395) - <a class="reference internal" href="database/query_builder.html"><span class="doc">Query Builder</span></a> method <code class="docutils literal"><span class="pre">count_all_results()</span></code> still fails if an <code class="docutils literal"><span class="pre">ORDER</span> <span class="pre">BY</span></code> condition is used.</li>
<li>Fixed a bug (#4399) - <a class="reference internal" href="database/query_builder.html"><span class="doc">Query Builder</span></a> methods <code class="docutils literal"><span class="pre">insert_batch()</span></code>, <code class="docutils literal"><span class="pre">update_batch()</span></code> produced confusing error messages when called with no data and <em>db_debug</em> is enabled.</li>
<li>Fixed a bug (#4401) - <a class="reference internal" href="database/query_builder.html"><span class="doc">Query Builder</span></a> breaks <code class="docutils literal"><span class="pre">WHERE</span></code> and <code class="docutils literal"><span class="pre">HAVING</span></code> conditions that use <code class="docutils literal"><span class="pre">IN()</span></code> with strings containing a closing parenthesis.</li>
<li>Fixed a regression in <a class="reference internal" href="helpers/form_helper.html"><span class="doc">Form Helper</span></a> functions <a class="reference internal" href="helpers/form_helper.html#set_checkbox" title="set_checkbox"><code class="xref php php-func docutils literal"><span class="pre">set_checkbox()</span></code></a>, <a class="reference internal" href="helpers/form_helper.html#set_radio" title="set_radio"><code class="xref php php-func docutils literal"><span class="pre">set_radio()</span></code></a> where “checked” inputs aren’t recognized after a form submit.</li>
<li>Fixed a bug (#4407) - <a class="reference internal" href="helpers/text_helper.html"><span class="doc">Text Helper</span></a> function <a class="reference internal" href="helpers/text_helper.html#word_censor" title="word_censor"><code class="xref php php-func docutils literal"><span class="pre">word_censor()</span></code></a> doesn’t work under PHP 7 if there’s no custom replacement provided.</li>
<li>Fixed a bug (#4415) - <a class="reference internal" href="libraries/form_validation.html"><span class="doc">Form Validation Library</span></a> rule <strong>valid_url</strong> didn’t accept URLs with IPv6 addresses enclosed in square brackets under PHP 5 (upstream bug).</li>
<li>Fixed a bug (#4427) - <a class="reference internal" href="helpers/captcha_helper.html"><span class="doc">CAPTCHA Helper</span></a> triggers an error if the provided character pool is too small.</li>
<li>Fixed a bug (#4430) - <a class="reference internal" href="libraries/file_uploading.html"><span class="doc">File Uploading Library</span></a> option <strong>file_ext_tolower</strong> didn’t work.</li>
<li>Fixed a bug (#4431) - <a class="reference internal" href="database/query_builder.html"><span class="doc">Query Builder</span></a> method <code class="docutils literal"><span class="pre">join()</span></code> discarded opening parentheses.</li>
<li>Fixed a bug (#4424) - <a class="reference internal" href="libraries/sessions.html"><span class="doc">Session Library</span></a> triggered a PHP warning when writing a newly created session with the ‘redis’ driver.</li>
<li>Fixed a bug (#4437) - <a class="reference internal" href="helpers/inflector_helper.html"><span class="doc">Inflector Helper</span></a> function <a class="reference internal" href="helpers/inflector_helper.html#humanize" title="humanize"><code class="xref php php-func docutils literal"><span class="pre">humanize()</span></code></a> didn’t escape its <code class="docutils literal"><span class="pre">$separator</span></code> parameter while using it in a regular expression.</li>
<li>Fixed a bug where <a class="reference internal" href="libraries/sessions.html"><span class="doc">Session Library</span></a> didn’t properly handle its locks’ statuses with the ‘memcached’ driver.</li>
<li>Fixed a bug where <a class="reference internal" href="libraries/sessions.html"><span class="doc">Session Library</span></a> triggered a PHP warning when writing a newly created session with the ‘memcached’ driver.</li>
<li>Fixed a bug (#4449) - <a class="reference internal" href="database/query_builder.html"><span class="doc">Query Builder</span></a> method <code class="docutils literal"><span class="pre">join()</span></code> breaks conditions containing <code class="docutils literal"><span class="pre">IS</span> <span class="pre">NULL</span></code>, <code class="docutils literal"><span class="pre">IS</span> <span class="pre">NOT</span> <span class="pre">NULL</span></code>.</li>
<li>Fixed a bug (#4491) - <a class="reference internal" href="libraries/sessions.html"><span class="doc">Session Library</span></a> didn’t clean-up internal variables for emulated locks with the ‘redis’ driver.</li>
<li>Fixed a bug where <a class="reference internal" href="libraries/sessions.html"><span class="doc">Session Library</span></a> didn’t clean-up internal variables for emulated locks with the ‘memcached’ driver.</li>
<li>Fixed a bug where <a class="reference internal" href="database/index.html"><span class="doc">Database</span></a> transactions didn’t work with the ‘ibase’ driver.</li>
<li>Fixed a bug (#4475) - <a class="reference internal" href="libraries/security.html"><span class="doc">Security Library</span></a> method <code class="docutils literal"><span class="pre">strip_image_tags()</span></code> preserves only the first URL character from non-quoted <em>src</em> attributes.</li>
<li>Fixed a bug where <a class="reference internal" href="general/profiling.html"><span class="doc">Profiler Library</span></a> didn’t apply <code class="docutils literal"><span class="pre">htmlspecialchars()</span></code> to all displayed inputs.</li>
<li>Fixed a bug (#4277) - <a class="reference internal" href="libraries/caching.html"><span class="doc">Cache Library</span></a> triggered fatal errors if accessing the Memcache(d) and/or Redis driver and they are not available on the system.</li>
<li>Fixed a bug where <a class="reference internal" href="libraries/caching.html"><span class="doc">Cache Library</span></a> method <code class="docutils literal"><span class="pre">is_supported()</span></code> logged an error message when it returns <code class="docutils literal"><span class="pre">FALSE</span></code> for the APC and Wincache drivers.</li>
</ul>
</div>
</div>
<div class="section" id="version-3-0-4">
<h2>Version 3.0.4<a class="headerlink" href="#version-3-0-4" title="Permalink to this headline">¶</a></h2>
<p>Release Date: January 13, 2016</p>
<ul class="simple">
<li>General Changes<ul>
<li>Updated <a class="reference internal" href="libraries/security.html"><span class="doc">Security Library</span></a> method <code class="docutils literal"><span class="pre">get_random_bytes()</span></code> to use PHP 7’s <code class="docutils literal"><span class="pre">random_bytes()</span></code> function when possible.</li>
<li>Updated <a class="reference internal" href="libraries/security.html"><span class="doc">Encryption Library</span></a> method <code class="docutils literal"><span class="pre">create_key()</span></code> to use PHP 7’s <code class="docutils literal"><span class="pre">random_bytes()</span></code> function when possible.</li>
</ul>
</li>
<li><a class="reference internal" href="database/index.html"><span class="doc">Database</span></a><ul>
<li>Added support for <code class="docutils literal"><span class="pre">OFFSET-FETCH</span></code> with Oracle 12c for the ‘oci8’ and ‘pdo/oci’ drivers.</li>
<li>Added support for the new <code class="docutils literal"><span class="pre">MYSQLI_CLIENT_SSL_DONT_VERIFY_SERVER_CERT</span></code> constant from <a class="reference external" href="https://secure.php.net/ChangeLog-5.php#5.6.16">PHP 5.6.16</a> for the ‘mysqli’ driver.</li>
</ul>
</li>
</ul>
<div class="section" id="bug-fixes-for-3-0-4">
<h3>Bug fixes for 3.0.4<a class="headerlink" href="#bug-fixes-for-3-0-4" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Fixed a bug (#4212) - <a class="reference internal" href="database/query_builder.html"><span class="doc">Query Builder</span></a> method <code class="docutils literal"><span class="pre">count_all_results()</span></code> could fail if an <code class="docutils literal"><span class="pre">ORDER</span> <span class="pre">BY</span></code> condition is used.</li>
<li>Fixed a bug where <a class="reference internal" href="helpers/form_helper.html"><span class="doc">Form Helper</span></a> functions <a class="reference internal" href="helpers/form_helper.html#set_checkbox" title="set_checkbox"><code class="xref php php-func docutils literal"><span class="pre">set_checkbox()</span></code></a>, <a class="reference internal" href="helpers/form_helper.html#set_radio" title="set_radio"><code class="xref php php-func docutils literal"><span class="pre">set_radio()</span></code></a> didn’t “uncheck” inputs on a submitted form if the default state is “checked”.</li>
<li>Fixed a bug (#4217) - <a class="reference internal" href="libraries/config.html"><span class="doc">Config Library</span></a> method <code class="docutils literal"><span class="pre">base_url()</span></code> didn’t use proper formatting for IPv6 when it falls back to <code class="docutils literal"><span class="pre">$_SERVER['SERVER_ADDR']</span></code>.</li>
<li>Fixed a bug where <a class="reference internal" href="helpers/captcha_helper.html"><span class="doc">CAPTCHA Helper</span></a> entered an infinite loop while generating a random string.</li>
<li>Fixed a bug (#4223) - <a class="reference internal" href="database/index.html"><span class="doc">Database</span></a> method <code class="docutils literal"><span class="pre">simple_query()</span></code> blindly executes queries without checking if the connection was initialized properly.</li>
<li>Fixed a bug (#4244) - <a class="reference internal" href="libraries/email.html"><span class="doc">Email Library</span></a> could improperly use “unsafe” US-ASCII characters during Quoted-printable encoding.</li>
<li>Fixed a bug (#4245) - <a class="reference internal" href="database/forge.html"><span class="doc">Database Forge</span></a> couldn’t properly handle <code class="docutils literal"><span class="pre">SET</span></code> and <code class="docutils literal"><span class="pre">ENUM</span></code> type fields with string values.</li>
<li>Fixed a bug (#4283) - <a class="reference internal" href="helpers/string_helper.html"><span class="doc">String Helper</span></a> function <a class="reference internal" href="helpers/string_helper.html#alternator" title="alternator"><code class="xref php php-func docutils literal"><span class="pre">alternator()</span></code></a> couldn’t be called without arguments.</li>
<li>Fixed a bug (#4306) - <a class="reference internal" href="database/index.html"><span class="doc">Database</span></a> method <code class="docutils literal"><span class="pre">version()</span></code> didn’t work properly with the ‘mssql’ driver.</li>
<li>Fixed a bug (#4039) - <a class="reference internal" href="libraries/sessions.html"><span class="doc">Session Library</span></a> could generate multiple (redundant) warnings in case of a read failure with the ‘files’ driver, due to a bug in PHP.</li>
<li>Fixed a bug where <a class="reference internal" href="libraries/sessions.html"><span class="doc">Session Library</span></a> didn’t have proper error handling on PHP 5 (due to a PHP bug).</li>
<li>Fixed a bug (#4312) - <a class="reference internal" href="libraries/form_validation.html"><span class="doc">Form Validation Library</span></a> didn’t provide error feedback for failed validation on empty requests.</li>
<li>Fixed a bug where <a class="reference internal" href="database/index.html"><span class="doc">Database</span></a> method <cite>version()</cite> returned banner text instead of only the version number with the ‘oci8’ and ‘pdo/oci’ drivers.</li>
<li>Fixed a bug (#4331) - <a class="reference internal" href="database/index.html"><span class="doc">Database</span></a> method <code class="docutils literal"><span class="pre">error()</span></code> didn’t really work for connection errors with the ‘mysqli’ driver.</li>
<li>Fixed a bug (#4343) - <a class="reference internal" href="libraries/email.html"><span class="doc">Email Library</span></a> failing with a <em>“More than one ‘from’ person”</em> message when using <em>sendmail</em>.</li>
<li>Fixed a bug (#4350) - <a class="reference internal" href="libraries/loader.html"><span class="doc">Loader Library</span></a> method <code class="docutils literal"><span class="pre">model()</span></code> logic directly instantiated the <code class="docutils literal"><span class="pre">CI_Model</span></code> or <code class="docutils literal"><span class="pre">MY_Model</span></code> classes.</li>
<li>Fixed a bug (#4337) - <a class="reference internal" href="database/index.html"><span class="doc">Database</span></a> method <code class="docutils literal"><span class="pre">query()</span></code> didn’t return a result set for queries with the <code class="docutils literal"><span class="pre">RETURNING</span></code> statement on PostgreSQL.</li>
<li>Fixed a bug (#4362) - <a class="reference internal" href="libraries/sessions.html"><span class="doc">Session Library</span></a> doesn’t properly maintain its state after ID regeneration with the ‘redis’ and ‘memcached’ drivers on PHP 7.</li>
<li>Fixed a bug (#4349) - <a class="reference internal" href="database/index.html"><span class="doc">Database</span></a> drivers ‘mysql’, ‘mysqli’, ‘pdo/mysql’ discard other <code class="docutils literal"><span class="pre">sql_mode</span></code> flags when “stricton” is enabled.</li>
<li>Fixed a bug (#4349) - <a class="reference internal" href="database/index.html"><span class="doc">Database</span></a> drivers ‘mysql’, ‘mysqli’, ‘pdo/mysql’ don’t turn off <code class="docutils literal"><span class="pre">STRICT_TRANS_TABLES</span></code> on MySQL 5.7+ when “stricton” is disabled.</li>
<li>Fixed a bug (#4374) - <a class="reference internal" href="libraries/sessions.html"><span class="doc">Session Library</span></a> with the ‘database’ driver could be affected by userspace <a class="reference internal" href="database/query_builder.html"><span class="doc">Query Builder</span></a> conditions.</li>
</ul>
</div>
</div>
<div class="section" id="version-3-0-3">
<h2>Version 3.0.3<a class="headerlink" href="#version-3-0-3" title="Permalink to this headline">¶</a></h2>
<p>Release Date: October 31, 2015</p>
<ul class="simple">
<li><strong>Security</strong><ul>
<li>Fixed an XSS attack vector in <a class="reference internal" href="libraries/security.html"><span class="doc">Security Library</span></a> method <code class="docutils literal"><span class="pre">xss_clean()</span></code>.</li>
<li>Changed <a class="reference internal" href="libraries/config.html"><span class="doc">Config Library</span></a> method <code class="docutils literal"><span class="pre">base_url()</span></code> to fallback to <code class="docutils literal"><span class="pre">$_SERVER['SERVER_ADDR']</span></code> when <code class="docutils literal"><span class="pre">$config['base_url']</span></code> is empty in order to avoid <em>Host</em> header injections.</li>
<li>Changed <a class="reference internal" href="helpers/captcha_helper.html"><span class="doc">CAPTCHA Helper</span></a> to use the operating system’s PRNG when possible.</li>
</ul>
</li>
<li><a class="reference internal" href="database/index.html"><span class="doc">Database</span></a><ul>
<li>Optimized <a class="reference internal" href="database/utilities.html"><span class="doc">Database Utility</span></a> method <code class="docutils literal"><span class="pre">csv_from_result()</span></code> for speed with larger result sets.</li>
<li>Added proper return values to <a class="reference internal" href="database/transactions.html"><span class="doc">Database Transactions</span></a> method <code class="docutils literal"><span class="pre">trans_start()</span></code>.</li>
</ul>
</li>
</ul>
<div class="section" id="bug-fixes-for-3-0-3">
<h3>Bug fixes for 3.0.3<a class="headerlink" href="#bug-fixes-for-3-0-3" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Fixed a bug (#4170) - <a class="reference internal" href="database/index.html"><span class="doc">Database</span></a> method <code class="docutils literal"><span class="pre">insert_id()</span></code> could return an identity from the wrong scope with the ‘sqlsrv’ driver.</li>
<li>Fixed a bug (#4179) - <a class="reference internal" href="libraries/sessions.html"><span class="doc">Session Library</span></a> doesn’t properly maintain its state after ID regeneration with the ‘database’ driver on PHP 7.</li>
<li>Fixed a bug (#4173) - <a class="reference internal" href="database/forge.html"><span class="doc">Database Forge</span></a> method <code class="docutils literal"><span class="pre">add_key()</span></code> didn’t allow creation of non-PRIMARY composite keys after the “bugfix” for #3968.</li>
<li>Fixed a bug (#4171) - <a class="reference internal" href="database/transactions.html"><span class="doc">Database Transactions</span></a> didn’t work with nesting in methods <code class="docutils literal"><span class="pre">trans_begin()</span></code>, <code class="docutils literal"><span class="pre">trans_commit()</span></code>, <code class="docutils literal"><span class="pre">trans_rollback()</span></code>.</li>
<li>Fixed a bug where <a class="reference internal" href="database/transactions.html"><span class="doc">Database Transaction</span></a> methods <code class="docutils literal"><span class="pre">trans_begin()</span></code>, <code class="docutils literal"><span class="pre">trans_commit()</span></code>, <code class="docutils literal"><span class="pre">trans_rollback()</span></code> ignored failures.</li>
<li>Fixed a bug where all <a class="reference internal" href="database/transactions.html"><span class="doc">Database Transaction</span></a> methods returned TRUE while transactions are actually disabled.</li>
<li>Fixed a bug where <a class="reference internal" href="general/common_functions.html"><span class="doc">common function</span></a> <a class="reference internal" href="general/common_functions.html#html_escape" title="html_escape"><code class="xref php php-func docutils literal"><span class="pre">html_escape()</span></code></a> modified keys of its array inputs.</li>
<li>Fixed a bug (#4192) - <a class="reference internal" href="libraries/email.html"><span class="doc">Email Library</span></a> wouldn’t always have proper Quoted-printable encoding due to a bug in PHP’s own <code class="docutils literal"><span class="pre">mb_mime_encodeheader()</span></code> function.</li>
</ul>
</div>
</div>
<div class="section" id="version-3-0-2">
<h2>Version 3.0.2<a class="headerlink" href="#version-3-0-2" title="Permalink to this headline">¶</a></h2>
<p>Release Date: October 8, 2015</p>
<ul class="simple">
<li><strong>Security</strong><ul>
<li>Fixed a number of XSS attack vectors in <a class="reference internal" href="libraries/security.html"><span class="doc">Security Library</span></a> method <code class="docutils literal"><span class="pre">xss_clean()</span></code> (thanks to Frans Rosén from <a class="reference external" href="https://detectify.com/">Detectify</a>).</li>
</ul>
</li>
<li>General Changes<ul>
<li>Updated the <em>application/config/constants.php</em> file to check if constants aren’t already defined before doing that.</li>
<li>Changed <a class="reference internal" href="libraries/loader.html"><span class="doc">Loader Library</span></a> method <code class="docutils literal"><span class="pre">model()</span></code> to only apply <code class="docutils literal"><span class="pre">ucfirst()</span></code> and not <code class="docutils literal"><span class="pre">strtolower()</span></code> to the requested class name.</li>
<li>Changed <a class="reference internal" href="libraries/config.html"><span class="doc">Config Library</span></a> methods <code class="docutils literal"><span class="pre">base_url()</span></code>, <code class="docutils literal"><span class="pre">site_url()</span></code> to allow protocol-relative URLs by passing an empty string as the protocol.</li>
</ul>
</li>
</ul>
<div class="section" id="bug-fixes-for-3-0-2">
<h3>Bug fixes for 3.0.2<a class="headerlink" href="#bug-fixes-for-3-0-2" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Fixed a bug (#2284) - <a class="reference internal" href="database/index.html"><span class="doc">Database</span></a> method <code class="docutils literal"><span class="pre">protect_identifiers()</span></code> breaks when <a class="reference internal" href="database/query_builder.html"><span class="doc">Query Builder</span></a> isn’t enabled.</li>
<li>Fixed a bug (#4052) - <a class="reference internal" href="general/routing.html"><span class="doc">Routing</span></a> with anonymous functions didn’t work for routes that don’t use regular expressions.</li>
<li>Fixed a bug (#4056) - <a class="reference internal" href="libraries/input.html"><span class="doc">Input Library</span></a> method <code class="docutils literal"><span class="pre">get_request_header()</span></code> could not return a value unless <code class="docutils literal"><span class="pre">request_headers()</span></code> was called beforehand.</li>
<li>Fixed a bug where the <a class="reference internal" href="database/index.html"><span class="doc">Database Class</span></a> entered an endless loop if it fails to connect with the ‘sqlsrv’ driver.</li>
<li>Fixed a bug (#4065) - <a class="reference internal" href="database/index.html"><span class="doc">Database</span></a> method <code class="docutils literal"><span class="pre">protect_identifiers()</span></code> treats a traling space as an alias separator if the input doesn’t contain ‘ AS ‘.</li>
<li>Fixed a bug (#4066) - <a class="reference internal" href="libraries/caching.html"><span class="doc">Cache Library</span></a> couldn’t fallback to a backup driver if the primary one is Memcache(d) or Redis.</li>
<li>Fixed a bug (#4073) - <a class="reference internal" href="libraries/email.html"><span class="doc">Email Library</span></a> method <code class="docutils literal"><span class="pre">send()</span></code> could return TRUE in case of an actual failure when an SMTP command fails.</li>
<li>Fixed a bug (#4086) - <a class="reference internal" href="database/query_builder.html"><span class="doc">Query Builder</span></a> didn’t apply <em>dbprefix</em> to LIKE conditions if the pattern included spaces.</li>
<li>Fixed a bug (#4091) - <a class="reference internal" href="libraries/caching.html"><span class="doc">Cache Library</span></a> ‘file’ driver could be tricked into accepting empty cache item IDs.</li>
<li>Fixed a bug (#4093) - <a class="reference internal" href="database/query_builder.html"><span class="doc">Query Builder</span></a> modified string values containing ‘AND’, ‘OR’ while compiling WHERE conditions.</li>
<li>Fixed a bug (#4096) - <a class="reference internal" href="database/query_builder.html"><span class="doc">Query Builder</span></a> didn’t apply <em>dbprefix</em> when compiling BETWEEN conditions.</li>
<li>Fixed a bug (#4105) - <a class="reference internal" href="libraries/form_validation.html"><span class="doc">Form Validation Library</span></a> didn’t allow pipe characters inside “bracket parameters” when using a string ruleset.</li>
<li>Fixed a bug (#4109) - <a class="reference internal" href="general/routing.html"><span class="doc">Routing</span></a> to <em>default_controller</em> didn’t work when <em>enable_query_strings</em> is set to TRUE.</li>
<li>Fixed a bug (#4044) - <a class="reference internal" href="libraries/caching.html"><span class="doc">Cache Library</span></a> ‘redis’ driver didn’t catch <code class="docutils literal"><span class="pre">RedisException</span></code> that could be thrown during authentication.</li>
<li>Fixed a bug (#4120) - <a class="reference internal" href="database/index.html"><span class="doc">Database</span></a> method <code class="docutils literal"><span class="pre">error()</span></code> didn’t return error info when called after <code class="docutils literal"><span class="pre">query()</span></code> with the ‘mssql’ driver.</li>
<li>Fixed a bug (#4116) - <a class="reference internal" href="libraries/pagination.html"><span class="doc">Pagination Library</span></a> set the wrong page number on the “data-ci-pagination-page” attribute in generated links.</li>
<li>Fixed a bug where <a class="reference internal" href="libraries/pagination.html"><span class="doc">Pagination Library</span></a> added the ‘rel=”start”’ attribute to the first displayed link even if it’s not actually linking the first page.</li>
<li>Fixed a bug (#4137) - <a class="reference internal" href="general/errors.html"><span class="doc">Error Handling</span></a> breaks for the new <code class="docutils literal"><span class="pre">Error</span></code> exceptions under PHP 7.</li>
<li>Fixed a bug (#4126) - <a class="reference internal" href="libraries/form_validation.html"><span class="doc">Form Validation Library</span></a> method <code class="docutils literal"><span class="pre">reset_validation()</span></code> discarded validation rules from config files.</li>
</ul>
</div>
</div>
<div class="section" id="version-3-0-1">
<h2>Version 3.0.1<a class="headerlink" href="#version-3-0-1" title="Permalink to this headline">¶</a></h2>
<p>Release Date: August 7, 2015</p>
<ul class="simple">
<li>Core<ul>
<li>Added DoS mitigation to <a class="reference internal" href="general/compatibility_functions.html#hash_pbkdf2" title="hash_pbkdf2"><code class="xref php php-func docutils literal"><span class="pre">hash_pbkdf2()</span></code></a> <a class="reference internal" href="general/compatibility_functions.html"><span class="doc">compatibility function</span></a>.</li>
</ul>
</li>
<li>Database<ul>
<li>Added <code class="docutils literal"><span class="pre">list_fields()</span></code> support for SQLite (‘sqlite3’ and ‘pdo_sqlite’ drivers).</li>
<li>Added SSL connection support for the ‘mysqli’ and ‘pdo_mysql’ drivers.</li>
</ul>
</li>
<li>Libraries<ul>
<li><a class="reference internal" href="libraries/file_uploading.html"><span class="doc">File Uploading Library</span></a> changes:<ul>
<li>Changed method <code class="docutils literal"><span class="pre">set_error()</span></code> to accept a custom log level (defaults to ‘error’).</li>
<li>Errors “no_file_selected”, “file_partial”, “stopped_by_extension”, “no_file_types”, “invalid_filetype”, “bad_filename” are now logged at the ‘debug’ level.</li>
<li>Errors “file_exceeds_limit”, “file_exceeds_form_limit”, “invalid_filesize”, “invalid_dimensions” are now logged at the ‘info’ level.</li>
</ul>
</li>
<li>Added ‘is_resource’ to the available expectations in <a class="reference internal" href="libraries/unit_testing.html"><span class="doc">Unit Testing Library</span></a>.</li>
</ul>
</li>
<li>Helpers<ul>
<li>Added Unicode support to <a class="reference internal" href="helpers/url_helper.html"><span class="doc">URL Helper</span></a> function <a class="reference internal" href="helpers/url_helper.html#url_title" title="url_title"><code class="xref php php-func docutils literal"><span class="pre">url_title()</span></code></a>.</li>
<li>Added support for passing the “extra” parameter as an array to all <a class="reference internal" href="helpers/form_helper.html"><span class="doc">Form Helper</span></a> functions that use it.</li>
</ul>
</li>
<li>Core<ul>
<li>Added support for defining a list of specific query parameters in <code class="docutils literal"><span class="pre">$config['cache_query_string']</span></code> for the <a class="reference internal" href="libraries/output.html"><span class="doc">Output Library</span></a>.</li>
<li>Added class existence and inheritance checks to <code class="docutils literal"><span class="pre">CI_Loader::model()</span></code> in order to ease debugging in case of name collisions.</li>
</ul>
</li>
</ul>
<div class="section" id="bug-fixes-for-3-0-1">
<h3>Bug fixes for 3.0.1<a class="headerlink" href="#bug-fixes-for-3-0-1" title="Permalink to this headline">¶</a></h3>
<ul class="simple">
<li>Fixed a bug (#3733) - Autoloading of libraries with aliases didn’t work, although it was advertised to.</li>
<li>Fixed a bug (#3744) - Redis <a class="reference internal" href="libraries/caching.html"><span class="doc">Caching</span></a> driver didn’t handle authentication failures properly.</li>
<li>Fixed a bug (#3761) - <a class="reference internal" href="helpers/url_helper.html"><span class="doc">URL Helper</span></a> function <a class="reference internal" href="helpers/url_helper.html#anchor" title="anchor"><code class="xref php php-func docutils literal"><span class="pre">anchor()</span></code></a> didn’t work with array inputs.</li>
<li>Fixed a bug (#3773) - <code class="docutils literal"><span class="pre">db_select()</span></code> didn’t work for MySQL with the PDO <a class="reference internal" href="database/index.html"><span class="doc">Database</span></a> driver.</li>
<li>Fixed a bug (#3771) - <a class="reference internal" href="libraries/form_validation.html"><span class="doc">Form Validation Library</span></a> was looking for a ‘form_validation_’ prefix when trying to translate field name labels.</li>
<li>Fixed a bug (#3787) - <a class="reference internal" href="libraries/ftp.html"><span class="doc">FTP Library</span></a> method <code class="docutils literal"><span class="pre">delete_dir()</span></code> failed when the target has subdirectories.</li>
<li>Fixed a bug (#3801) - <a class="reference internal" href="libraries/output.html"><span class="doc">Output Library</span></a> method <code class="docutils literal"><span class="pre">_display_cache()</span></code> incorrectly looked for the last modified time of a directory instead of the cache file.</li>
<li>Fixed a bug (#3816) - <a class="reference internal" href="libraries/form_validation.html"><span class="doc">Form Validation Library</span></a> treated empty string values as non-existing ones.</li>
<li>Fixed a bug (#3823) - <a class="reference internal" href="libraries/sessions.html"><span class="doc">Session Library</span></a> drivers Redis and Memcached didn’t properly handle locks that are blocking the request for more than 30 seconds.</li>
<li>Fixed a bug (#3846) - <a class="reference internal" href="libraries/image_lib.html"><span class="doc">Image Manipulation Library</span></a> method <cite>image_mirror_gd()</cite> didn’t properly initialize its variables.</li>
<li>Fixed a bug (#3854) - <cite>field_data()</cite> didn’t work properly with the Oracle (OCI8) database driver.</li>
<li>Fixed a bug in the <a class="reference internal" href="database/utilities.html"><span class="doc">Database Utility Class</span></a> method <code class="docutils literal"><span class="pre">csv_from_result()</span></code> didn’t work with a whitespace CSV delimiter.</li>
<li>Fixed a bug (#3890) - <a class="reference internal" href="libraries/input.html"><span class="doc">Input Library</span></a> method <code class="docutils literal"><span class="pre">get_request_header()</span></code> treated header names as case-sensitive.</li>
<li>Fixed a bug (#3903) - <a class="reference internal" href="libraries/form_validation.html"><span class="doc">Form Validation Library</span></a> ignored “unnamed” closure validation rules.</li>
<li>Fixed a bug (#3904) - <a class="reference internal" href="libraries/form_validation.html"><span class="doc">Form Validation Library</span></a> ignored “named” callback rules when the field is empty and there’s no ‘required’ rule.</li>
<li>Fixed a bug (#3922) - <a class="reference internal" href="libraries/email.html"><span class="doc">Email</span></a> and <a class="reference internal" href="libraries/xmlrpc.html"><span class="doc">XML-RPC</span></a> libraries could enter an infinite loop due to <a class="reference external" href="https://bugs.php.net/bug.php?id=39598">PHP bug #39598</a>.</li>
<li>Fixed a bug (#3913) - <a class="reference internal" href="libraries/caching.html"><span class="doc">Cache Library</span></a> didn’t work with the direct <code class="docutils literal"><span class="pre">$this->cache->$driver_name->method()</span></code> syntax with Redis and Memcache(d).</li>
<li>Fixed a bug (#3932) - <a class="reference internal" href="database/query_builder.html"><span class="doc">Query Builder</span></a> didn’t properly compile WHERE and HAVING conditions for field names that end with “and”, “or”.</li>
<li>Fixed a bug in <a class="reference internal" href="database/query_builder.html"><span class="doc">Query Builder</span></a> where <code class="docutils literal"><span class="pre">delete()</span></code> didn’t properly work on multiple tables with a WHERE condition previously set via <code class="docutils literal"><span class="pre">where()</span></code>.</li>
<li>Fixed a bug (#3952) - <a class="reference internal" href="database/index.html"><span class="doc">Database</span></a> method <code class="docutils literal"><span class="pre">list_fields()</span></code> didn’t work with SQLite3.</li>
<li>Fixed a bug (#3955) - <a class="reference internal" href="libraries/caching.html"><span class="doc">Cache Library</span></a> methods <code class="docutils literal"><span class="pre">increment()</span></code> and <code class="docutils literal"><span class="pre">decrement()</span></code> ignored the ‘key_prefix’ setting.</li>
<li>Fixed a bug (#3963) - <a class="reference internal" href="libraries/unit_testing.html"><span class="doc">Unit Testing Library</span></a> wrongly tried to translate filenames, line numbers and notes values in test results.</li>
<li>Fixed a bug (#3965) - <a class="reference internal" href="libraries/file_uploading.html"><span class="doc">File Uploading Library</span></a> ignored the “encrypt_name” setting when “overwrite” is enabled.</li>
<li>Fixed a bug (#3968) - <a class="reference internal" href="database/forge.html"><span class="doc">Database Forge</span></a> method <code class="docutils literal"><span class="pre">add_key()</span></code> didn’t treat array inputs as composite keys unless it’s a PRIMARY KEY.</li>
<li>Fixed a bug (#3715) - <a class="reference internal" href="libraries/pagination.html"><span class="doc">Pagination Library</span></a> could generate broken link when a protocol-relative base URL is used.</li>
<li>Fixed a bug (#3828) - <a class="reference internal" href="libraries/output.html"><span class="doc">Output Library</span></a> method <code class="docutils literal"><span class="pre">delete_cache()</span></code> couldn’t delete index page caches.</li>
<li>Fixed a bug (#3704) - <a class="reference internal" href="database/index.html"><span class="doc">Database</span></a> method <code class="docutils literal"><span class="pre">stored_procedure()</span></code> in the ‘oci8’ driver didn’t properly bind parameters.</li>
<li>Fixed a bug (#3778) - <a class="reference internal" href="helpers/download_helper.html"><span class="doc">Download Helper</span></a> function <a class="reference internal" href="helpers/download_helper.html#force_download" title="force_download"><code class="xref php php-func docutils literal"><span class="pre">force_download()</span></code></a> incorrectly sent a <em>Pragma</em> response header.</li>
<li>Fixed a bug (#3752) - <code class="docutils literal"><span class="pre">$routing['directory']</span></code> overrides were not properly handled and always resulted in a 404 “Not Found” error.</li>
<li>Fixed a bug (#3279) - <a class="reference internal" href="database/query_builder.html"><span class="doc">Query Builder</span></a> methods <code class="docutils literal"><span class="pre">update()</span></code> and <code class="docutils literal"><span class="pre">get_compiled_update()</span></code> did double escaping on the table name if it was provided via <code class="docutils literal"><span class="pre">from()</span></code>.</li>
<li>Fixed a bug (#3991) - <code class="docutils literal"><span class="pre">$config['rewrite_short_tags']</span></code> never worked due to <code class="docutils literal"><span class="pre">function_exists('eval')</span></code> always returning FALSE.</li>
<li>Fixed a bug where the <a class="reference internal" href="libraries/file_uploading.html"><span class="doc">File Uploading Library</span></a> library will not properly configure its maximum file size unless the input value is of type integer.</li>
<li>Fixed a bug (#4000) - <a class="reference internal" href="libraries/pagination.html"><span class="doc">Pagination Library</span></a> didn’t enable “rel” attributes by default if no attributes-related config options were used.</li>
<li>Fixed a bug (#4004) - <a class="reference internal" href="libraries/uri.html"><span class="doc">URI Class</span></a> didn’t properly parse the request URI if it contains a colon followed by a digit.</li>
<li>Fixed a bug in <a class="reference internal" href="database/query_builder.html"><span class="doc">Query Builder</span></a> where the <code class="docutils literal"><span class="pre">$escape</span></code> parameter for some methods only affected field names.</li>
<li>Fixed a bug (#4012) - <a class="reference internal" href="database/query_builder.html"><span class="doc">Query Builder</span></a> methods <code class="docutils literal"><span class="pre">where_in()</span></code>, <code class="docutils literal"><span class="pre">or_where_in()</span></code>, <code class="docutils literal"><span class="pre">where_not_in()</span></code>, <code class="docutils literal"><span class="pre">or_where_not_in()</span></code> didn’t take into account previously cached WHERE conditions when query cache is in use.</li>
<li>Fixed a bug (#4015) - <a class="reference internal" href="libraries/email.html"><span class="doc">Email Library</span></a> method <code class="docutils literal"><span class="pre">set_header()</span></code> didn’t support method chaining, although it was advertised.</li>
<li>Fixed a bug (#4027) - <a class="reference internal" href="general/routing.html"><span class="doc">Routing</span></a> with HTTP verbs only worked if the route request method was declared in all-lowercase letters.</li>
<li>Fixed a bug (#4026) - <a class="reference internal" href="database/transactions.html"><span class="doc">Database Transactions</span></a> always rollback if any previous <code class="docutils literal"><span class="pre">query()</span></code> call fails.</li>
<li>Fixed a bug (#4023) - <a class="reference internal" href="helpers/string_helper.html"><span class="doc">String Helper</span></a> function <code class="docutils literal"><span class="pre">increment_string()</span></code> didn’t escape its <code class="docutils literal"><span class="pre">$separator</span></code> parameter.</li>
</ul>
</div>
</div>
<div class="section" id="version-3-0-0">
<h2>Version 3.0.0<a class="headerlink" href="#version-3-0-0" title="Permalink to this headline">¶</a></h2>
<p>Release Date: March 30, 2015</p>
<ul class="simple">
<li>License<ul>
<li>CodeIgniter has been relicensed with the <a class="reference external" href="http://opensource.org/licenses/MIT">MIT License</a>, eliminating its old proprietary licensing.</li>
</ul>
</li>
<li>General Changes<ul>
<li>PHP 5.1.6 is no longer supported. CodeIgniter now requires PHP 5.2.4 and recommends PHP 5.4+ or newer to be used.</li>
<li>Changed filenaming convention (class file names now must be Ucfirst and everything else in lowercase).</li>
<li>Changed the default database driver to ‘mysqli’ (the old ‘mysql’ driver is DEPRECATED).</li>
<li><code class="docutils literal"><span class="pre">$_SERVER['CI_ENV']</span></code> can now be set to control the <code class="docutils literal"><span class="pre">ENVIRONMENT</span></code> constant.</li>
<li>Added an optional backtrace to php-error template.</li>
<li>Added Android to the list of user agents.</li>
<li>Added Windows 7, Windows 8, Windows 8.1, Android, Blackberry, iOS and PlayStation 3 to the list of user platforms.</li>
<li>Added Fennec (Firefox for mobile) to the list of mobile user agents.</li>
<li>Ability to log certain error types, not all under a threshold.</li>
<li>Added support for pem, p10, p12, p7a, p7c, p7m, p7r, p7s, crt, crl, der, kdb, rsa, cer, sst, csr Certs to mimes.php.</li>
<li>Added support for pgp, gpg, zsh and cdr files to mimes.php.</li>
<li>Added support for 3gp, 3g2, mp4, wmv, f4v, vlc Video files to mimes.php.</li>
<li>Added support for m4a, aac, m4u, xspf, au, ac3, flac, ogg, wma Audio files to mimes.php.</li>
<li>Added support for kmz and kml (Google Earth) files to mimes.php.</li>
<li>Added support for ics Calendar files to mimes.php.</li>
<li>Added support for rar, jar and 7zip archives to mimes.php.</li>
<li>Updated support for xml (‘application/xml’) and xsl (‘application/xml’, ‘text/xsl’) files in mimes.php.</li>
<li>Updated support for doc files in mimes.php.</li>
<li>Updated support for docx files in mimes.php.</li>
<li>Updated support for php files in mimes.php.</li>
<li>Updated support for zip files in mimes.php.</li>
<li>Updated support for csv files in mimes.php.</li>
<li>Added Romanian, Greek, Vietnamese and Cyrilic characters in <em>application/config/foreign_characters.php</em>.</li>
<li>Changed logger to only chmod when file is first created.</li>
<li>Removed previously deprecated SHA1 Library.</li>
<li>Removed previously deprecated use of <code class="docutils literal"><span class="pre">$autoload['core']</span></code> in <em>application/config/autoload.php</em>.
Only entries in <code class="docutils literal"><span class="pre">$autoload['libraries']</span></code> are auto-loaded now.</li>
<li>Removed previously deprecated EXT constant.</li>
<li>Updated all classes to be written in PHP 5 style, with visibility declarations and no <code class="docutils literal"><span class="pre">var</span></code> usage for properties.</li>
<li>Added an Exception handler.</li>
<li>Moved error templates to <em>application/views/errors/</em> and made the path configurable via <code class="docutils literal"><span class="pre">$config['error_views_path']</span></code>.</li>
<li>Added support non-HTML error templates for CLI applications.</li>
<li>Moved the Log class to <em>application/core/</em></li>
<li>Global config files are loaded first, then environment ones. Environment config keys overwrite base ones, allowing to only set the keys we want changed per environment.</li>
<li>Changed detection of <code class="docutils literal"><span class="pre">$view_folder</span></code> so that if it’s not found in the current path, it will now also be searched for under the application folder.</li>
<li>Path constants BASEPATH, APPPATH and VIEWPATH are now (internally) defined as absolute paths.</li>
<li>Updated email validation methods to use <code class="docutils literal"><span class="pre">filter_var()</span></code> instead of PCRE.</li>
<li>Changed environment defaults to report all errors in <em>development</em> and only fatal ones in <em>testing</em>, <em>production</em> but only display them in <em>development</em>.</li>
<li>Updated <em>ip_address</em> database field lengths from 16 to 45 for supporting IPv6 address on <a class="reference internal" href="libraries/trackback.html"><span class="doc">Trackback Library</span></a> and <a class="reference internal" href="helpers/captcha_helper.html"><span class="doc">Captcha Helper</span></a>.</li>
<li>Removed <em>cheatsheets</em> and <em>quick_reference</em> PDFs from the documentation.</li>
<li>Added availability checks where usage of dangerous functions like <code class="docutils literal"><span class="pre">eval()</span></code> and <code class="docutils literal"><span class="pre">exec()</span></code> is required.</li>
<li>Added support for changing the file extension of log files using <code class="docutils literal"><span class="pre">$config['log_file_extension']</span></code>.</li>
<li>Added support for turning newline standardization on/off via <code class="docutils literal"><span class="pre">$config['standardize_newlines']</span></code> and set it to FALSE by default.</li>
<li>Added configuration setting <code class="docutils literal"><span class="pre">$config['composer_autoload']</span></code> to enable loading of a <a class="reference external" href="https://getcomposer.org">Composer</a> auto-loader.</li>
<li>Removed the automatic conversion of ‘programmatic characters’ to HTML entities from the <a class="reference internal" href="libraries/uri.html"><span class="doc">URI Library</span></a>.</li>
<li>Changed log messages that say a class or file was loaded to “info” level instead of “debug”, so that they don’t pollute log files when <code class="docutils literal"><span class="pre">$config['log_threshold']</span></code> is set to 2 (debug).</li>
</ul>