flickr.php

<?php

// Get settings
require_once('config.php');

// Cache file
$cache_file = 'cache/flickr.txt';

// Time that the cache was last filled.
$cache_file_created = @file_exists( $cache_file ) ? @filemtime( $cache_file ) : 0;

$image_found = false;

// Show file from cache if still valid.
if ( time() - $flickr_cachetime < $cache_file_created ) {

	$image_found = true;

	// Display images from the cache.
	@readfile( $cache_file );	

} else {

	// Fetch the RSS feed from Flickr
	$url = "http://api.flickr.com/services/feeds/photos_public.gne?id=$your_flickr_id&format=rss";

	// Initiate the curl session
	$ch = curl_init();

	// Set the URL
	curl_setopt( $ch, CURLOPT_URL, $url );

	// Removes the headers from the output
	curl_setopt( $ch, CURLOPT_HEADER, 0 );

	// Return the output instead of displaying it directly
	curl_setopt( $ch, CURLOPT_RETURNTRANSFER, 1 );

	// Execute the curl session
	$rss_feed = curl_exec( $ch );

	// Close the curl session
	curl_close( $ch );

	// Parse the RSS feed to an XML object.
	$rss_feed = @simplexml_load_string( $rss_feed );

	if( isset( $rss_feed ) ) {

		$image = $rss_feed->channel->item;

		// Error check: Make sure there is at least one item
		if( count( $image ) ) {

			// Start output buffering.
			ob_start();

			// Open the flickr wrapping element.
			$images = '';

			$image_found = true;

			for( $i = 0; $i < $flickr_limit; $i++ ) {

				// Get thumbnail size
				preg_match( '/<img[^>]*>/i', $image[$i]->description, $image_tag );
				preg_match( '/(?<=src=[\'|"])[^\'|"]*?(?=[\'|"])/i', $image_tag[0], $image_src );
				
				if ( preg_match( '/(_m.jpg)$/',$image_src[0] ) ){
					$thumb = preg_replace('/(_m.jpg)$/', '_s.jpg', $image_src[0] );
				} elseif( preg_match( '/(_m.png)$/',$image_src[0] ) ){
					$thumb = preg_replace('/(_m.png)$/', '_s.png', $image_src[0] );
				} elseif( preg_match( '/(_m.gif)$/',$image_src[0] ) ){
					$thumb = preg_replace( '/(_m.gif)$/', '_s.gif', $image_src[0] );
				}

				$image_link = $image[$i]->link;
				$image_title = $image[$i]->title;

				$images .= "<li><a href='$image_link' title='$image_title' target='_blank'><img src='$thumb' alt='$image_title'></a></li>\n";

			}

			// Close the flickr wrapping element.
			echo $images;

			// Generate a new cache file.
			$file = @fopen( $cache_file, 'w' );

			// Save the contents of output buffer to the file, and flush the buffer. 
			@fwrite( $file, ob_get_contents() ); 
			@fclose( $file ); 
			ob_end_flush();

		}
	
	}

}

// In case the RSS feed did not parse or load correctly, show a link to the Flickr account
if ( !$image_found )
	echo $images = "<li>Oops, our Flickr feed is unavailable at the moment - <a href='http://flickr.com/$your_flickr_id/' target='_blank'>Check our images on Flickr!</a></li>";