oEmbed JSFiddle links into WordPress posts

jsfiddle-oembed.php

<?php
/*
Plugin Name: JSFiddle oEmbed
Plugin URI:  http://klausk.aruno.lt/jsfiddle/
Description: Embed JSFiddle into posts
Version: 1.0
Author: IdeaG
Author URI: http://klausk.aruno.lt
License: GPL2 

Based on Gist-oembed by ninnypants - https://gist.github.com/ninnypants/5054541
*/

class JSFiddle_oEmbed {
  public function __construct(){
    add_action( 'init', array( $this, 'setup_handler' ) );
  }
 
  public function result( $url ){
    global $content_width;
    $url = $url[0];
    $height = '300';
    $width = $content_width?$content_width:'100%';
    $query = parse_url($url,PHP_URL_QUERY);
    $url = trailingslashit(preg_replace('#\?.+#i', '', $url));
    parse_str($query,$query);
    if (isset($query['height'])) {
      $height = $query['height'];
    }
    if (isset($query['width'])) {
      $width = $query['width'];
    }
    if( !preg_match( '#/embedded/#i', $url ) )
      $url .= 'embedded/';
    return '<iframe width="'.$width.'" height="'.$height.'" src="'.$url.'" allowfullscreen="allowfullscreen" frameborder="0"></iframe>';
  }
 
  public function setup_handler(){
    wp_embed_register_handler( 'jsfiddle', '#https?://jsfiddle.net/.*#i', array( $this, 'result' ) );
  }
}
 
$jsfiddle_oembed = new JSFiddle_oEmbed();
?>