Viewing file:  youtube-iframe.php (2.76 KB) -rw-r--r--
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<?php
/*
Plugin Name: Embedded YouTube videos
Description: Parse embedded videos from YouTube
Version: 1.0
Author: Janis Elsts
ModuleCategory: parser
ModuleClassName: blcYouTubeIframe
ModuleContext: on-demand
ModuleLazyInit: true
ModulePriority: 120
*/
if ( !class_exists('blcEmbedParserBase') ){
require 'embed-parser-base.php';
}
class blcYouTubeIframe extends blcEmbedParserBase {
var $supported_formats = array('html');
function init(){
parent::init();
$this->short_title = __('YouTube Video', 'broken-link-checker');
$this->long_title = __('Embedded YouTube video', 'broken-link-checker');
$this->url_search_string = 'youtube.com/embed/';
}
/**
* Extract embedded elements from a HTML string.
*
* Returns an array of IFrame elements found in the input string.
* Elements without a 'src' attribute are skipped.
*
* Each array item has the same basic structure as the array items
* returned by blcUtility::extract_tags(), plus an additional 'embed_code' key
* that contains the full HTML code for the entire <ifram> tag.
*
* @uses blcUtility::extract_tags() This function is a simple wrapper around extract_tags()
*
* @param string $html
* @return array
*/
function extract_embeds($html){
$results = array();
//remove all <code></code> blocks first
$html = preg_replace('/<code[^>]*>.+?<\/code>/si', ' ', $html);
//Find likely-looking <iframe> elements
$iframes = blcUtility::extract_tags($html, 'iframe', false, true);
foreach($iframes as $embed){
if ( empty($embed['attributes']['src']) ){
continue;
}
$embed['embed_code'] = $embed['full_tag'];
$results[] = $embed;
}
return $results;
}
function link_url_from_src($src){
$parts = @parse_url($src);
if ( empty($parts) || !isset($parts['path']) ) {
return null;
}
//Is this a playlist?
if ( strpos($parts['path'], 'videoseries') !== false ) {
//Extract the playlist ID from the query string.
if ( !isset($parts['query']) || empty($parts['query']) ) {
return null;
}
parse_str($parts['query'], $query);
if ( !isset($query['list']) || empty($query['list']) ) {
return null;
}
$playlist_id = $query['list'];
if ( substr($playlist_id, 0, 2) === 'PL' ) {
$playlist_id = substr($playlist_id, 2);
}
//Reconstruct the playlist URL.
$url = 'http://www.youtube.com/playlist?list=' . $playlist_id;
} else {
//Extract video ID from the SRC. The ID is always 11 characters.
$exploded = explode('/', $parts['path']);
$video_id = substr( end($exploded), 0, 11 );
//Reconstruct the video permalink based on the ID
$url = 'http://www.youtube.com/watch?v='.$video_id;
}
return $url;
}
}
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