functions.php

<?php

/**
 * PanDownload 网页复刻版，PHP 语言版函数文件
 *
 * 务必要保证此文件存在，否则整个服务将会不可使用！
 *
 * 请勿随意修改此文件！如需更改相关配置请到 config.php ！
 *
 * @author Yuan_Tuo <yuantuo666@gmail.com>
 * @link https://imwcr.cn/
 * @link https://space.bilibili.com/88197958
 *
 */
if (!defined('init')) { // 直接访问处理程序
	header('Content-Type: text/plain; charset=utf-8');
	if (!file_exists('config.php')) {
		http_response_code(503);
		header('Content-Type: text/plain; charset=utf-8');
		header('Refresh: 5;url=install.php');
		die("HTTP 503 服务不可用！\r\n暂未安装此程序！\r\n将在五秒内跳转到安装程序！");
	} else {
		require('config.php');
	}
	http_response_code(403);
	header('Refresh: 3;url=./');
	define('init', true);
	require('config.php');
	die("HTTP 403 禁止访问！\r\n此文件是 PanDownload 网页复刻版 PHP 语言版项目的有关文件！\r\n禁止直接访问！");
}

// main
function setCurl(&$ch, array $header)
{ // 批处理 curl
	$a = curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); // 忽略证书
	$b = curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0); // 不检查证书与域名是否匹配（2为检查）
	$c = curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); // 以字符串返回结果而非输出
	$d = curl_setopt($ch, CURLOPT_HTTPHEADER, $header); // 请求头
	return ($a && $b && $c && $d);
}
function post(string $url, $data, array $header)
{ // POST 发送数据
	$ch = curl_init($url);
	setCurl($ch, $header);
	curl_setopt($ch, CURLOPT_POST, true); // POST 方法
	curl_setopt($ch, CURLOPT_POSTFIELDS, $data); // POST 的数据
	$result = curl_exec($ch);
	curl_close($ch);
	return $result;
}
function get(string $url, array $header)
{ // GET 请求数据
	$ch = curl_init($url);
	setCurl($ch, $header);
	$result = curl_exec($ch);
	curl_close($ch);
	return $result;
}
function head(string $url, array $header)
{ // 获取响应头
	$ch = curl_init($url);
	setCurl($ch, $header);
	curl_setopt($ch, CURLOPT_HEADER, true); // 返回响应头
	curl_setopt($ch, CURLOPT_NOBODY, true); // 只要响应头
	curl_setopt($ch, CURLOPT_FOLLOWLOCATION, false);
	$response = curl_exec($ch);
	$header_size = curl_getinfo($ch, CURLINFO_HEADER_SIZE); // 获得响应头大小
	$result = substr($response, 0, $header_size); // 根据头大小获取头信息
	curl_close($ch);
	return $result;
}
function getSubstr(string $str, string $leftStr, string $rightStr)
{
	$left = strpos($str, $leftStr); // echo '左边:'.$left;
	$right = strpos($str, $rightStr, $left); // echo '<br>右边:'.$right;
	if ($left < 0 || $right < $left) return '';
	$left += strlen($leftStr);
	return substr($str, $left, $right - $left);
}
function formatSize(float $size, int $times = 0)
{ // 格式化size显示 PHP版本过老会报错
	if ($size > 1024) {
		$size /= 1024;
		return formatSize($size, $times + 1); // 递归处理
	} else {
		switch ($times) {
			case '0':
				$unit = ($size == 1) ? 'Byte' : 'Bytes';
				break;
			case '1':
				$unit = 'KB';
				break;
			case '2':
				$unit = 'MB';
				break;
			case '3':
				$unit = 'GB';
				break;
			case '4':
				$unit = 'TB';
				break;
			case '5':
				$unit = 'PB';
				break;
			case '6':
				$unit = 'EB';
				break;
			case '7':
				$unit = 'ZB';
				break;
			default:
				$unit = '单位未知';
		}
		return sprintf('%.2f', $size) . $unit;
	}
}
function CheckPassword(bool $IsReturnBool = false)
{ // 校验密码
	if (IsCheckPassword) { // 若校验密码
		$return = false;
		if (!isset($_POST["Password"])) { // 若未传入 Password
			if (isset($_SESSION["Password"]) && $_SESSION["Password"] === Password) { // 若 SESSION 中密码正确
				$return = true;
			}
		} else if ($_POST["Password"] === Password) { // 若传入密码正确
			$_SESSION['Password'] = $_POST["Password"]; // 设置 SESSION
			$return = true;
		}
		if ($IsReturnBool) { // 若 $IsReturnBool 为 true 则只返回 true/false，不执行 dl_error
			return $return;
		}
		if (!$return) { // 若 $IsReturnBool 为 false 且验证失败，则执行 dl_error
			global $system_start_time;
			dl_error("密码错误", "请检查你输入的密码！");
			echo Footer;
			die('</div><script>console.log("后端计算时间：' . (microtime(true) - $system_start_time) . 's");</script></body></html>');
		}
	} else { // 若不校验密码则永远 true
		return true;
	}
}
// 解析分享链接
// 改用微信接口，不需要使用verifyPwd获取randsk
function getSign(string $surl, $randsk, $uk = "", $shareid = "")
{
	if ($randsk === 1) return 1;
	if ($surl != "") {
		$url = 'https://pan.baidu.com/s/1' . $surl;
	} elseif ($uk != "" and  $shareid != "") {
		$url = "https://pan.baidu.com/share/link?shareid=$shareid&uk=$uk"; // 旧版本分享链接兼容
	}

	$header = array(
		"User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.514.1919.810 Safari/537.36",
		"Cookie: BDUSS=" . BDUSS . ";STOKEN=" . STOKEN . ";BDCLND=" . $randsk . ";"
	);
	// 如果不修改这里,则要修改配置文件ini
	$result = get($url, $header);

	//有可能是账号被百度拉黑，导致获取到的页面不同 #83 #86
	//百度全面拉黑 2021-03-18 19:40
	//pd修复版及网页版失效
	// if (DEBUG) {
	// 	echo '<pre>getSign():no match</pre>';
	// 	var_dump(htmlspecialchars($result));
	// }
	if (preg_match('/locals.mset\((\{.*?\})\);/', $result, $matches)) {
		$result_decode = json_decode($matches[1], true, 512, JSON_BIGINT_AS_STRING);
		if (DEBUG) {
			echo '<pre>【限制版】getSign():';
			var_dump($result_decode);
			echo '</pre>';
		}
		return $result_decode;
	} else {
		if (DEBUG) {
			echo '<pre>【限制版】getSign():no match</pre>';
			var_dump(htmlspecialchars($result));
		}
		if (strstr($result, "Redirecting to") != false) {
			// 账号BDUSS或STOKEN失效
			dl_error("普通账号失效", "可能由于配置问题或者是修改账号密码导致的普通账号失效，请重新获取BDUSS和STOKEN并设置到config.php中。");
			exit;
		} else {
			dl_error("根目录yunData获取失败", "页面未正常加载，或者百度已经升级页面，无法正常获取根目录yunData数据。");
		}
		return 1;
	}
}
function FileList($sign)
{
	if ($sign === 1) return 1;
	return $sign['file_list'] === null ? 1 : $sign['file_list'];
}
function GetDirRemote(string $dir, string $randsk, string $shareid, string $uk)
{
	$url = 'https://pan.baidu.com/share/list?shareid=' . $shareid . '&uk=' . $uk . '&dir=' . urlencode($dir);
	$header = array(
		"User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.514.1919.810 Safari/537.36",
		"Cookie: BDUSS=" . BDUSS . ";STOKEN=" . STOKEN . ";BDCLND=" . $randsk . ";",
		"Referer: https://pan.baidu.com/disk/home"
	);
	$result = json_decode(get($url, $header), true);
	if (DEBUG) {
		echo '<pre>GetDir():';
		var_dump($result);
		echo '</pre>';
	}
	return $result;
}
function FileInfo(string $filename, float $size, string $md5, int $server_ctime)
{ // 输出 HTML 字符串
	return '<p class="card-text"  id="filename" >文件名：<b>' . $filename . '</b></p><p class="card-text">文件大小：<b>' . formatSize($size) . '</b></p><p class="card-text">文件MD5：<b>' . $md5
		. '</b></p><p class="card-text">上传时间：<b>' . date("Y年m月d日 H:i:s", $server_ctime) . '</b></p>';
}
function getDlink(string $fs_id, string $timestamp, string $sign, string $randsk, string $share_id, string $uk, string $bdstoken, bool $isnoualink, int $app_id = 250528)
{ // 获取下载链接

	if ($isnoualink) {
		$url = 'https://pan.baidu.com/api/sharedownload?app_id=' . $app_id . '&channel=chunlei&clienttype=0&sign=' . $sign . '&timestamp=' . $timestamp . '&web=1&bdstoken=' . $bdstoken; // 获取直链 50MB以内
	} else {
		$url = 'https://pan.baidu.com/api/sharedownload?app_id=' . $app_id . '&channel=chunlei&clienttype=12&sign=' . $sign . '&timestamp=' . $timestamp . '&web=1'; // 获取下载链接
	}

	$data = "encrypt=0" . "&extra=" . urlencode('{"sekey":"' . urldecode($randsk) . '"}') . "&fid_list=[$fs_id]" . "&primaryid=$share_id" . "&uk=$uk" . "&product=share&type=nolimit";
	$header = array(
		"User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.514.1919.810 Safari/537.36",
		"Cookie: BDUSS=" . BDUSS . ";STOKEN=" . STOKEN . ";BDCLND=" . $randsk . ";",
		"Referer: https://pan.baidu.com/disk/home"
	);
	$result = json_decode(post($url, $data, $header), true);
	if (DEBUG) {
		echo '<pre>getDlink():';
		var_dump($result);
		echo '</pre>';
	}
	return $result;

	// 没有 referer 就 112 ，然后没有 sekey 参数就 118    -20出现验证码
	// 		参数				类型		描述
	// list					json array	文件信息列表
	// names				json		如果查询共享目录，该字段为共享目录文件上传者的uk和账户名称
	// list[0]["category"]	int			文件类型
	// list[0]["dlink"]		string		文件下载地址
	// list[0]["file_name"]	string		文件名
	// list[0]["isdir"]		int			是否是目录
	// list[0]["server_ctime"]	int		文件的服务器创建时间
	// list[0]["server_mtime"]	int		文件的服务修改时间
	// list[0]["size"]		int			文件大小
	// list[0]["thumbs"]				缩略图地址
	// list[0]["height"]	int			图片高度
	// list[0]["width"]		int			图片宽度
	// list[0]["date_taken"]	int		图片拍摄时间
}
function dl_error(string $title, string $content, bool $jumptip = false)
{
	if ($jumptip) {
		$content .= '<br>请打开调试模式，并将错误信息以议题的形式提交到<a href="https://github.com/yuantuo666/baiduwp-php/issues">GitHub项目</a>。';
	}
	if (Language["LanguageName"] != "Chinese") {
		$content = "To know more about it, you can translate the information following.<br />Raw Title:$title<br />Raw Message:$content<br /><br />If you still have question, please copy the information and sent to the email(yuantuo666@gmail.com) for help.";
		$title = "An error happened.";
	}
	echo '<div class="row justify-content-center"><div class="col-md-7 col-sm-8 col-11"><div class="alert alert-danger" role="alert">
	<h5 class="alert-heading">' . $title . '</h5><hr /><p class="card-text">' . $content;
	echo '</p></div></div></div>'; // 仅仅弹出提示框，并不结束进程
}
function get_BDCLND($surl, $Pwd, $uk = "", $shareid = "")
{
	$header = array('User-Agent: netdisk');
	if ($surl != "") {
		$url = 'https://pan.baidu.com/share/wxlist?clienttype=25&shorturl=' . $surl . '&pwd=' . $Pwd; // 使用新方法获取，减少花费的时间
	} elseif ($uk != "" and  $shareid != "") {
		$url = "https://pan.baidu.com/share/wxlist?clienttype=25&uk=$uk&shareid=$shareid&pwd=$Pwd"; // 兼容老版本链接
	}
	$result = head($url, $header);
	if (strstr($result, "BDCLND") == false) $bdclnd = false; // 修复：部分链接不存在bdclnd
	else $bdclnd = GetSubstr($result, 'BDCLND=', ';');

	if ($bdclnd) {
		if (DEBUG) {
			echo '<pre>get_BDCLND():';
			var_dump($bdclnd);
			echo '</pre>';
		}
		return $bdclnd;
	} else {
		if (DEBUG) {
			echo '<pre>【获取bdclnd失败，可能是不需要此参数】get_BDCLND():';
			var_dump($result);
			echo '</pre>';
		}
		if ($surl != "") {
			echo '<script>Swal.fire("使用提示","检测到当前链接异常，保存到网盘重新分享后可获得更好的体验~","info");</script>';
		} elseif ($uk != "" and  $shareid != "") {
			echo '<script>Swal.fire("使用提示","当前获取的链接属于旧版本链接，正在尝试使用兼容模式获取。如果获取失败，请保存到网盘重新分享后再试。","info");</script>';
		}
		// 尝试使用老方法获取
		if ($surl != "") {
			$header = head("https://pan.baidu.com/s/" . $surl, []);
		} elseif ($uk != "" and  $shareid != "") {
			$header = head("https://pan.baidu.com/share/link?shareid=$shareid&uk=$uk", []);
		}

		$bdclnd = preg_match('/BDCLND=(.+?);/', $header, $matches);
		if ($bdclnd) {
			if (DEBUG) {
				echo '<pre>【老版本方法】get_BDCLND():';
				var_dump($matches[1]);
				echo '</pre>';
			}
			return $matches[1];
		} else {
			if (DEBUG) {
				echo '<pre>【老版本方法】get_BDCLND():';
				var_dump($header);
				echo '</pre>';
			}
			return '';
		}
	}
}
function connectdb(bool $isAPI = false)
{
	$servername = DbConfig["servername"];
	$username = DbConfig["username"];
	$DBPassword = DbConfig["DBPassword"];
	$dbname = DbConfig["dbname"];
	$GLOBALS['dbtable'] = DbConfig["dbtable"];
	$conn = mysqli_init();
	mysqli_options($conn, MYSQLI_OPT_LOCAL_INFILE, false); // 感谢 unc1e 披露的漏洞
	$m = mysqli_real_connect($conn, $servername, $username, $DBPassword, $dbname, 3306);
	// $conn = mysqli_connect($servername, $username, $DBPassword, $dbname);

	// Check connection
	if (!$m) {
		if ($isAPI) {
			// api特殊处理
			EchoInfo(-1, array("msg" => "数据库连接失败：" . mysqli_connect_error(), "sviptips" => "Error"));
			exit;
		} else {
			dl_error("服务器错误", "数据库连接失败：" . mysqli_connect_error());
			exit;
		}
	}
	$GLOBALS['conn'] = $conn;

	mysqli_query($conn, "set sql_mode = ''");
	mysqli_query($conn, "set character set 'utf8'");
	mysqli_query($conn, "set names 'utf8'");
}
function GetList(string $Shorturl, string $Dir, bool $IsRoot, string $Password)
{
	$Url = 'https://pan.baidu.com/share/wxlist?channel=weixin&version=2.2.2&clienttype=25&web=1';

	$Root = ($IsRoot) ? "1" : "0";
	$Dir = urlencode($Dir);
	$Data = "shorturl=$Shorturl&dir=$Dir&root=$Root&pwd=$Password&page=1&num=1000&order=time";
	$header = array("User-Agent: netdisk", "Referer: https://pan.baidu.com/disk/home");
	$result = json_decode(post($Url, $Data, $header), true);
	if (DEBUG) {
		echo '<pre>GetList():';
		var_dump($result);
		echo '</pre>';
	}
	return $result;
}
$getConstant = function (string $name) {
	return constant($name);
};
/*
 * 优化 JavaScript 代码体积
 * beta 版本
 */
$JSCode = array("get" => function (string $value) {
	$value = preg_replace('# *//.*#', '', $value);
	$value = preg_replace('#/\*.*?\*/#s', '', $value);
	$value = preg_replace('#(\r?\n|\t| ){2,}#', '$1', $value);
	$value = preg_replace('#([,;{])[ \t]*?\r?\n[ \t]*([^ \t])#', '$1 $2', $value);
	$value = preg_replace('#(\r?\n|\t| ){2,}#', '$1', $value);
	$value = preg_replace('#([^ \t])[ \t]*?\r?\n[ \t]*?\}#', '$1 }', $value);
	$value = preg_replace('#(\r?\n|\t| ){2,}#', '$1', $value);
	$value = preg_replace('#([,;{])\t+#', '$1 ', $value);
	$value = preg_replace('#\t+\}#', ' }', $value);
	$value = preg_replace('#(\r?\n|\t| ){2,}#', '$1', $value);
	return $value;
}, "echo" => function (string $value) {
	global $JSCode;
	echo $JSCode['get']($value);
});
/*
 * 将settings.php里面的代码移到functions.php里面来
 * 方便api调用
 */
function EchoInfo(int $error, array $Result)
{
	$ReturnArray = array("error" => $error);
	$ReturnArray += $Result;
	echo json_encode($ReturnArray);
}
function GetAnalyseTablePage(string $page)
{
	$page = (int)$page;
	if ($page <= 0) exit;
	$EachPageNum = 10;
	$conn = $GLOBALS['conn'];
	$dbtable = $GLOBALS['dbtable'];
	$AllRow = "";
	$StartNum = ($page - 1) * $EachPageNum;
	$sql = "SELECT * FROM `$dbtable` ORDER BY `ptime` DESC LIMIT $StartNum,$EachPageNum";
	$mysql_query = mysqli_query($conn, $sql);
	while ($Result = mysqli_fetch_assoc($mysql_query)) {
		// 存在数据
		$EachRow = "<tr>
		<th>" . $Result["id"] . "</th>
		<td><div class=\"btn-group btn-group-sm\" role=\"group\">
			<a class=\"btn btn-secondary\" href=\"javascript:DeleteById('AnalyseTable'," . $Result["id"] . ");\">删除</a>
		</div></td>
		<td>" . $Result["userip"] . "</td>
		<td style=\"width:80px;\">" . $Result["filename"] . "</td>
		<td>" . formatSize((float)$Result["size"]) . "</td>
		<td style=\"width:50px;\">" . $Result["path"] . "</td>
		<td><a href=\"https://" . $Result["realLink"] . "\">" . substr($Result["realLink"], 0, 35) . "……</a></td>
		<td>" . $Result["ptime"] . "</td><td>" . $Result["paccount"] . "</td>
		</tr>";
		$AllRow .= $EachRow;
	}
	return $AllRow;
}
function GetSvipTablePage(string $page)
{
	if ($page <= 0) exit;
	$EachPageNum = 10;
	$conn = $GLOBALS['conn'];
	$dbtable = $GLOBALS['dbtable'];
	$AllRow = "";
	$StartNum = ((int)$page - 1) * $EachPageNum;
	$sql = "SELECT * FROM `" . $dbtable . "_svip` ORDER BY `id` DESC LIMIT $StartNum,$EachPageNum";
	$mysql_query = mysqli_query($conn, $sql);
	while ($Result = mysqli_fetch_assoc($mysql_query)) {
		// 存在数据
		$is_using = ($Result["is_using"] != "0000-00-00 00:00:00") ? $Result["is_using"] : "";
		$state = ($Result["state"] == -1) ? "限速" : "正常";
		$EachRow = "<tr>
		<th>" . $Result["id"] . "</th>
		<td><div class=\"btn-group btn-group-sm\" role=\"group\">
			<a class=\"btn btn-secondary\" href=\"javascript:SettingFirstAccount(" . $Result["id"] . ");\">使用此账号</a>
			<a class=\"btn btn-secondary\" href=\"javascript:SettingNormalAccount(" . $Result["id"] . ");\">重置状态</a>
			<a class=\"btn btn-secondary\" href=\"javascript:DeleteById('SvipTable'," . $Result["id"] . ");\">删除</a>
		</div></td>
		<td>" .  $is_using . "</td>
		<td>" . $Result["name"] . "</td>
		<td>" . $state . "</td>
		<td>" . $Result["add_time"] . "</td>
		<td><a href=\"javascript:Swal.fire('" . $Result["svip_bduss"] . "')\">" . substr($Result["svip_bduss"], 0, 20) . "……</a></td>
		<td><a href=\"javascript:Swal.fire('" . $Result["svip_stoken"] . "')\">" . substr($Result["svip_stoken"], 0, 20) . "……</a></td>
		</tr>";
		$AllRow .= $EachRow;
	}
	return $AllRow;
} // name 账号名称	svip_bduss 会员bduss	svip_stoken 会员stoken	add_time 会员账号加入时间	state 会员状态(0:正常,-1:限速)	is_using 是否正在使用(非零表示真)
function GetIPTablePage(string $page)
{
	if ($page <= 0) exit;
	$EachPageNum = 10;
	$conn = $GLOBALS['conn'];
	$dbtable = $GLOBALS['dbtable'];
	$AllRow = "";
	$StartNum = ((int)$page - 1) * $EachPageNum;
	$sql = "SELECT * FROM `" . $dbtable . "_ip` ORDER BY `id` DESC LIMIT $StartNum,$EachPageNum";
	$mysql_query = mysqli_query($conn, $sql);
	while ($Result = mysqli_fetch_assoc($mysql_query)) {
		// 存在数据
		$type = ($Result["type"] == -1) ? "黑名单" : "白名单";
		$EachRow = "<tr>
		<th>" . $Result["id"] . "</th>
		<td><div class=\"btn-group btn-group-sm\" role=\"group\">
			<a class=\"btn btn-secondary\" href=\"javascript:DeleteById('IPTable'," . $Result["id"] . ");\">删除</a>
		</div></td>
		<td>" . $Result["ip"] . "</td>
		<td>" . $type . "</td>
		<td>" . $Result["remark"] . "</td>
		<td>" . $Result["add_time"] . "</td>
		</tr>";
		$AllRow .= $EachRow;
	}
	return $AllRow;
}
/**
 * 获取数据库中的BDUSS数据
 *
 * @return array 返回BDUSS和对应id id=-1表示本地解析
 */
function GetDBBDUSS()
{
	global $dbtable, $conn;
	// 获取SVIP BDUSS
	switch (SVIPSwitchMod) {
		case 1:
			//模式1：用到废为止
			// 时间倒序输出第一项未被限速账号
			$sql = "SELECT `id`,`svip_bduss`,`svip_stoken` FROM `" . $dbtable . "_svip` WHERE `state`!=-1 ORDER BY `is_using` DESC,`id` DESC LIMIT 0,1";
			$Result = mysqli_query($conn, $sql);
			if ($Result =  mysqli_fetch_assoc($Result)) {
				$SVIP_BDUSS = $Result["svip_bduss"];
				$SVIP_STOKEN = $Result["svip_stoken"];
				$id = $Result["id"];
			} else {
				// 数据库中所有SVIP账号已经用完，启用本地SVIP账号
				$SVIP_BDUSS = SVIP_BDUSS;
				$SVIP_STOKEN = SVIP_STOKEN;
				$id = "-1";
			}
			break;
		case 2:
			//模式2：轮番上
			// 时间顺序输出第一项未被限速账号
			$sql = "SELECT `id`,`svip_bduss`,`svip_stoken` FROM `" . $dbtable . "_svip` WHERE `state`!=-1 ORDER BY `is_using` ASC,`id` DESC LIMIT 0,1";

			$Result = mysqli_query($conn, $sql);
			if ($Result =  mysqli_fetch_assoc($Result)) {
				$SVIP_BDUSS = $Result["svip_bduss"];
				$SVIP_STOKEN = $Result["svip_stoken"];
				$id = $Result["id"];
				//不论解析成功与否，将当前账号更新时间，下一次使用另一账号
				// 开始处理
				// 这里最新的时间表示可用账号，按顺序排序
				$is_using = date("Y-m-d H:i:s");
				$sql = "UPDATE `" . $dbtable . "_svip` SET `is_using`= '$is_using' WHERE `id`=$id";
				$mysql_query = mysqli_query($conn, $sql);
				if ($mysql_query == false) {
					// 失败 但可继续解析
					dl_error("数据库错误", "请联系站长修复无法自动切换账号问题！");
				}
			} else {
				// 数据库中所有SVIP账号已经用完，启用本地SVIP账号
				$SVIP_BDUSS = SVIP_BDUSS;
				$SVIP_STOKEN = SVIP_STOKEN;
				$id = "-1";
			}
			break;
		case 3:
			//模式3：手动切换，不管限速
			// 时间倒序输出第一项账号，不管限速
			$sql = "SELECT `id`,`svip_bduss`,`svip_stoken` FROM `" . $dbtable . "_svip` ORDER BY `is_using` DESC,`id` DESC LIMIT 0,1";
			$Result = mysqli_query($conn, $sql);
			if ($Result =  mysqli_fetch_assoc($Result)) {
				$SVIP_BDUSS = $Result["svip_bduss"];
				$SVIP_STOKEN = $Result["svip_stoken"];
				$id = $Result["id"];
			} else {
				// 数据库中所有SVIP账号已经用完，启用本地SVIP账号
				$SVIP_BDUSS = SVIP_BDUSS;
				$SVIP_STOKEN = SVIP_STOKEN;
				$id = "-1";
			}
			break;
		case 4:
			//模式4：轮番上(无视限速)
			// 时间顺序输出第一项限速账号
			$sql = "SELECT `id`,`svip_bduss`,`svip_stoken` FROM `" . $dbtable . "_svip` ORDER BY `is_using` ASC,`id` DESC LIMIT 0,1";

			$Result = mysqli_query($conn, $sql);
			if ($Result =  mysqli_fetch_assoc($Result)) {
				$SVIP_BDUSS = $Result["svip_bduss"];
				$SVIP_STOKEN = $Result["svip_stoken"];
				$id = $Result["id"];
				//不论解析成功与否，将当前账号更新时间，下一次使用另一账号
				// 开始处理
				// 这里最新的时间表示可用账号，按顺序排序
				$is_using = date("Y-m-d H:i:s");
				$sql = "UPDATE `" . $dbtable . "_svip` SET `is_using`= '$is_using' WHERE `id`=$id";
				$mysql_query = mysqli_query($conn, $sql);
				if ($mysql_query == false) {
					// 失败 但可继续解析
					dl_error("数据库错误", "请联系站长修复无法自动切换账号问题！");
				}
			} else {
				// 数据库中所有SVIP账号已经用完，启用本地SVIP账号
				$SVIP_BDUSS = SVIP_BDUSS;
				$SVIP_STOKEN = SVIP_STOKEN;
				$id = "-1";
			}
			break;
		case 0:
			//模式0：使用本地解析
		default:
			$SVIP_BDUSS = SVIP_BDUSS;
			$SVIP_STOKEN = SVIP_STOKEN;
			$id = "-1";
			break;
	}
	return [$SVIP_BDUSS, $id, $SVIP_STOKEN];
}
/**
 * 用于获取账号状态
 *
 * @return array [errno,会员状态,用户名,登录状态,会员剩余时间]
 */
function AccountStatus(string $BDUSS, string $STOKEN)
{
	$Url = "https://pan.baidu.com/api/gettemplatevariable?channel=chunlei&web=1&app_id=250528&clienttype=0";
	$Header = [
		"User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.514.1919.810 Safari/537.36",
		"Cookie: BDUSS=$BDUSS;STOKEN=$STOKEN;"
	];
	$Data = "fields=[%22username%22,%22loginstate%22,%22is_vip%22,%22is_svip%22,%22is_evip%22]";
	$Result = post($Url, $Data, $Header);
	$Result = json_decode($Result, true);
	if (DEBUG) {
		echo '<pre>账号状态:';
		var_dump($Result);
		echo '</pre>';
	}
	if ($Result["errno"] == 0) {
		// 正常
		$Username = $Result["result"]["username"];
		$LoginStatus = $Result["result"]["loginstate"];
		if ($Result["result"]["is_vip"] == 1) {
			$SVIP = 1; //会员账号
		} elseif ($Result["result"]["is_svip"] == 1 or $Result["result"]["is_evip"] == 1) {
			$SVIP = 2; //超级会员账号
		} else {
			$SVIP = 0; //普通账号
			return array(0, $SVIP, $Username, $LoginStatus, 0);
		}

		$Url = "https://pan.baidu.com/rest/2.0/membership/user?channel=chunlei&web=1&app_id=250528&clienttype=0";
		$Header = [
			"User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.514.1919.810 Safari/537.36",
			"Cookie: BDUSS=$BDUSS;STOKEN=$STOKEN;"
		];
		$Data = "method=query";
		$Result = post($Url, $Data, $Header);
		$Result = json_decode($Result, true);
		if (DEBUG) {
			echo '<pre>会员状态:';
			var_dump($Result);
			echo '</pre>';
		}
		if (isset($Result["reminder"]["svip"])) {
			//存在会员信息
			$LeftSeconds = $Result["reminder"]["svip"]["leftseconds"];
			return array(0, $SVIP, $Username, $LoginStatus, $LeftSeconds);
		}
	} elseif ($Result["errno"] == -6) {
		// 账号失效
		return array(-6);
	} else {
		//未知错误
		return array($Result["errno"]);
	}
}
/**
 * 时间差计算
 *
 * @param Timestamp $time
 * @return String Time Elapsed
 * @author Shelley Shyan
 * @copyright http://phparch.cn (Professional PHP Architecture)
 */
function time2Units(int $time)
{
	$year   = floor($time / 60 / 60 / 24 / 365);
	$time  -= $year * 60 * 60 * 24 * 365;
	$month  = floor($time / 60 / 60 / 24 / 30);
	$time  -= $month * 60 * 60 * 24 * 30;
	$day    = floor($time / 60 / 60 / 24);
	$time  -= $day * 60 * 60 * 24;
	$hour   = floor($time / 60 / 60);
	$time  -= $hour * 60 * 60;
	$minute = floor($time / 60);
	$time  -= $minute * 60;
	$second = $time;
	$elapse = '';

	$unitArr = array(
		'年'  => 'year', '个月' => 'month',  '天' => 'day',
		'小时' => 'hour', '分钟' => 'minute', '秒' => 'second'
	);

	foreach ($unitArr as $cn => $u) {
		if ($$u > 0) {
			$elapse = $$u . $cn;
			break;
		}
	}

	return $elapse;
}


function CheckUpdate(bool $includePreRelease = false, bool $enforce = false, array $info = []) // 检查更新程序
{

	$filePath = "update.json"; // 缓存文件路径
	if (!function_exists('download')) { // 似乎是 PHP 的 Bug ，无语了，下同
		function download(bool $includePreRelease, array &$info) // 下载
		{
			$header = array(
				"User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36 Edg/91.0.864.67"
			);
			if ($includePreRelease) { // 若包括 Pre-Release
				array_push($info, "Include-PreRelease");
				$result = getAPI('https://api.github.com/repos/yuantuo666/baiduwp-php/releases', $header);
				if ($result) {
					return json_decode($result, true)[0]; // 返回首个结果
				}
				array_push($info, "API-Download-Newest-Error");
				return false;
			} else { // 若不包括
				$result = getAPI('https://api.github.com/repos/yuantuo666/baiduwp-php/releases/latest', $header);
				if ($result) {
					return json_decode($result, true);
				}
				array_push($info, "API-Download-Latest-Error");
				return false;
			}
		}
	}
	if (!function_exists('downloadError')) {
		function downloadError(array &$info) // 下载失败
		{
			array_push($info, "Download-Error");
			return array("code" => 1, "info" => $info);
		}
	}
	if (!function_exists('getAPI')) {
		function getAPI(string $url, array $header) // 获取 API 数据
		{
			$ch = curl_init($url);
			setCurl($ch, $header);
			curl_setopt($ch, CURLOPT_TIMEOUT, 10); // 设置超时时间为 10s
			$result = curl_exec($ch);
			curl_close($ch);
			return $result;
		}
	}
	if ($enforce) { // 是否强制检查更新
		array_push($info, "Enforce-Check");
		$result = download($includePreRelease, $info); // 下载
		if (!$result) { // 若出错则直接 return
			return downloadError($info);
		}
	} else { // 不强制检查更新
		if (file_exists($filePath)) { // 检查更新缓存是否存在
			$lastm = filemtime($filePath); // 获取文件最后修改时间
			if ((!$lastm) || ($lastm + 3600 < time())) { // 获取失败或超时（一小时）则重新获取
				if (!$lastm) {
					array_push($info, "CacheFile-Get-LastM-Error"); // 获取失败
				} else {
					array_push($info, "CacheFile-Expired"); // 超时
				}
				$result = download($includePreRelease, $info); // 下载并检查是否出错
				if (!$result) {
					return downloadError($info);
				}
			} else {
				$file = fopen($filePath, "r"); // 打开文件
				if ($file) { // 若打开成功
					$result = fread($file, filesize($filePath)); // 读取文件
					if (!$result) { // 若读取失败
						array_push($info, "Read-CacheFile-Error");
						$result = download($includePreRelease, $info); // 下载并检查是否出错
						if (!$result) {
							return downloadError($info);
						}
					} else { // 若读取成功
						$result = json_decode($result, true); // 解码
						if (isset($result['prerelease'])) { // 测试是否包含 PreRelease（检查缓存文件是否存在问题）
							if ($result['prerelease'] && !$includePreRelease) { // 若不检查预发行版本但缓存为预发行
								array_push($info, "CacheFile-Is-PreRelease-But-Exclude-It");
								$result = download($includePreRelease, $info); // 下载并检查是否出错
								if (!$result) {
									return downloadError($info);
								}
							} else if (!$result['prerelease'] && $includePreRelease) { // 若检查预发行但缓存非预发行（这个只是用来防止万一，所以下载失败了不终止）
								array_push($info, "CacheFile-Isnot-PreRelease-But-Include-It--Try-To-Get");
								$download_result = download($includePreRelease, $info); // 下载并检查是否出错
								if (!$download_result) { // 下载失败的话还使用缓存
									array_push($info, "Download-Error");
									array_push($info, "Use-Cache");
								} else { // 若下载成功则用新的
									$result = $download_result;
								}
							} else { // 没有问题，使用缓存
								array_push($info, "Use-Cache");
							}
						} else { // 缓存文件存在问题
							array_push($info, "Invalid-CacheFile");
							$result = download($includePreRelease, $info); // 下载并检查是否出错
							if (!$result) {
								return downloadError($info);
							}
						}
					}
					fclose($file); // 关闭文件
				} else { // 打开失败
					array_push($info, "Open-CacheFile-Error");
					$result = download($includePreRelease, $info); // 下载并检查是否出错
					if (!$result) {
						return downloadError($info);
					}
				}
			}
		} else { // 文件不存在
			array_push($info, "No-CacheFile");
			$result = download($includePreRelease, $info); // 下载并检查是否出错
			if (!$result) {
				return downloadError($info);
			}
		}
	}

	if (!(isset($result['tag_name']) && isset($result['assets']) && isset($result['html_url']))) { // 若缓存文件存在问题
		array_push($info, "Invalid-CacheFile");
		$result = download($includePreRelease, $info); // 下载并检查是否出错
		if (!$result) {
			return downloadError($info);
		}
	}

	$version = substr($result['tag_name'], 1); // 解析数据
	$isPreRelease = $result['prerelease'];
	$url = "";
	$page_url = $result['html_url'];
	foreach ($result['assets'] as &$asset) {
		if ($asset['name'] === 'ProgramFiles.zip') {
			$url = $asset['browser_download_url'];
			break;
		}
	}

	$file = fopen($filePath, "w"); // 打开文件
	if ($file) { // 若打开成功
		fwrite($file, json_encode($result, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES)); // 写入文件
		if (!$result) { // 若写入失败
			array_push($info, "Write-NewFile-Error");
		}
		fclose($file); // 关闭文件
	} else { // 打开失败
		array_push($info, "Open-NewFile-Error");
	}


	$commonReturn = array(
		"code" => 0, "version" => $version, "PreRelease" => $isPreRelease,
		"file_url" => $url, "page_url" => $page_url, "info" => $info, "now_version" => programVersion
	);
	$compare = version_compare(programVersion, $version); // 比较版本
	if ($compare === -1 || $compare === 0) { // 更新或相同
		$commonReturn['have_update'] = ($compare === -1) ? true : false; // 更新则为 true
		return $commonReturn;
	} else { // 版本存在问题（比最新版还高？）
		if (in_array('Try-Get-Version-Include-PreRelease', $info)) { // 若已尝试获取预发行，则直接返回版本有误提示
			array_push($info, "Invalid-Version");
			$commonReturn['code'] = 2;
			$commonReturn['info'] = $info;
			return $commonReturn;
		} else { // 试图强制检查预发行版更新
			array_push($info, "Try-Get-Version-Include-PreRelease");
			array_splice($info, array_search('Use-Cache', $info), 1);
			return CheckUpdate(true, true, $info);
		}
	}
}