PHP: Clase simple para obtener información de videos de YouTube v1.1

Hace bastante tiempo ya, Septiembre 24 del 2010 para ser mas especifico, escribí una clase en PHP para poder obtener información de los videos de Youtube liberada bajo licencia GPL/v2.

Esta entrada tuvo muchas visitas y comentarios, así que decidí sacar la versión 1.1 con nuevas funcionalidades y mejoras en performance. El código lo pueden encontrar en este proyecto de Google Code:

• http://code.google.com/p/simple-class-youtube/

En el mismo podrán hacer comentarios, sugerencias y bajarse el código con un ejemplo. También encontraran una Wiki para poder empezar a usar la clase…

En esta v1.1, podemos obtener los siguientes datos:

• Title.
• Valid (is a valid video?)
• Published.
• Updated.
• Category.
• Tags.
• Content.
• Description.
• Link.
• Images.
• Author Name.
• Author Url.
• Author Uri.
• Embed Code.

Les dejo el código para aquellos que les gusta el copy/paste…
youtube.class.php

<?php
/*
 * Name: Simple Class YouTube
 * Description: Get Information of YouTube video
 * Site: http://www.zarpele.com.ar
 * License: GNU GENERAL PUBLIC LICENSE (http://www.gnu.org/licenses/gpl.html)
 * Version: 1.1
 */

class Youtube
{
    var $data = '';
    var $xml = '';
    var $id = '';

    private function youtubeCurl($url){
        $browser_id = 'none';
        $curl_handle = curl_init();
        $options = array
        (
            CURLOPT_URL => $url,
            CURLOPT_HEADER => false,
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_USERAGENT => $browser_id
        );
        curl_setopt_array($curl_handle, $options);
        $server_output = curl_exec($curl_handle);
        curl_close($curl_handle);
        return $server_output;
    }

    public function __construct($id)
    {
        if (strlen($id) >= 22)
        {
            parse_str( parse_url( $id, PHP_URL_QUERY ) );
            $this->id = $v;
        }
        else
        {
            $this->id = $id;
        }

        $url = 'http://gdata.youtube.com/feeds/videos/' . $this->id;
        $server_output = $this->youtubeCurl($url);

        if($server_output == 'Invalid id'){
            return false;
        }else{
            $this->data = $server_output;
            $description = $this->prepareDescription();
            $this->xml = new SimpleXMLElement($this->data);
            $this->xml->addChild('description', $description);
            return true;
        }
    }

    public function getData(){
        return $this->data;
    }

    public function getXml(){
        return $this->xml;
    }

    public function valid(){
        if(empty($this->data)){
            return false;
        }else{
            return true;
        }
    }

    /* DATA VIDEO */
    public function getTitle(){
        if ($this->valid()){
            return $this->xml->title;
        }else{
            return false;
        }
    }

    public function getPublished()
    {
        if ($this->valid()){
            return $this->xml->published;
        }else{
            return false;
        }
    }

    public function getUpdated()
    {
        if ($this->valid()){
            return $this->xml->updated;
        }else{
            return false;
        }
    }

    public function getCategory()
    {
        if ($this->valid()){
            $category = '';
            for ($i = 0; $i < count($this->xml->category);$i++){
                if ($this->xml->category[$i]['scheme'] == 'http://gdata.youtube.com/schemas/2007/categories.cat'){
                    $category = $this->xml->category[$i]['label'];
                    break;
                }
            }
            return $category;
        }else{
            return false;
        }
    }

    public function getTags(){
        if ($this->valid()){
            $tags = array();
            for ($i = 0; $i < count($this->xml->category);$i++){
                if ($this->xml->category[$i]['scheme'] == 'http://gdata.youtube.com/schemas/2007/keywords.cat'){
                    $name = $this->xml->category[$i]['term'];
                    array_push($tags, $name);
                }
            }
            return $tags;
        }else{
            return false;
        }
    }

    public function getContent()
    {
        if ($this->valid()){
            return $this->xml->content;
        }else{
            return false;
        }
    }

    public function getDescription()
    {
        if ($this->valid()){
            return $this->xml->description;
        }else{
            return false;
        }
   }

    private function prepareDescription()
    {
        $startString = "<media:description type='plain'>";
        $endString = "</media:description>";

        $starLocation = strpos($this->data, $startString);
        $tempString = substr($this->data, $starLocation);

        $endLocation = strpos($tempString, $endString);
        $description = substr($tempString, 0, $endLocation);

        if (empty($description))
        {
            $description=false;
        }
        else
        {
            $description = substr($description,strlen($startString));
        }

        return $description;
    }

    public function getUrl()
    {
        if ($this->valid()){
            return 'http://www.youtube.com/watch?v='.$this->id;
        }else{
            return false;
        }
    }

    public function getImageUrl($option)
    {
        if ($this->valid()){
            if($option == 'default'){
            return 'http://i.ytimg.com/vi/'.$this->id.'/default.jpg';
            }
            if($option == 0){
                return 'http://i.ytimg.com/vi/'.$this->id.'/0.jpg';
            }
            if($option == 1){
                return 'http://i.ytimg.com/vi/'.$this->id.'/1.jpg';
            }
            if($option == 2){
                return 'http://i.ytimg.com/vi/'.$this->id.'/2.jpg';
            }
            if($option == 3){
                return 'http://i.ytimg.com/vi/'.$this->id.'/3.jpg';
            }
        }else{
            return false;
        }
    }

    /* AUTHOR MEHTODS */
    public function getAuthorName(){
        if ($this->valid()){
            return $this->xml->author->name;
        }else{
            return false;
        }
    }

    public function getAuthorUrl(){
        if ($this->valid()){
            return 'http://www.youtube.com/user/'.$this->getAuthorName();
        }else{
            return false;
        }
    }

    public function getAuthorUri(){
        if ($this->valid()){
            return $this->xml->author->uri;
        }else{
            return false;
        }
    }

    /* see: http://code.google.com/apis/youtube/player_parameters.html */
    public function getEmbeb($options = NULL)
    {
        $width = $options['width'];
        if (!isset($options['width'])){
            $width = 425;
        } //Width
        unset($options['width']);

        $height = $options['height'];
        if (!isset($options['height'])){
            $height = 349;
        } //Height
        unset($options['height']);

        $secure = '';
        if (isset($options['https'])){
            if ($options['https'] == 1){
                $secure = 's';
                unset($options['https']);
            }else{
                $secure = '';
                unset($options['https']);
            }
        }

        if(empty($options)){
            $exclamation = '"';
        }else{
            $exclamation = '?';
        }

        $embeb_code = '<iframe class="youtube-player" type="text/html" width="'.$width.'" height="'.$height.'" src="http'.$secure.'://www.youtube.com/embed/'.$this->id.$exclamation;

        $i = 1;
        foreach($options as $key => $value){
            if($i == count($options)){
                $embeb_code .= $key.'='.$value.'"';
            }else{
                $embeb_code .= $key.'='.$value.'&';
            }
            $i++;
        }
        $embeb_code .= '></iframe>';

        return $embeb_code;
    }
}

?>

sample.php

<?php
/*
 * Name: Simple Class Info YouTube
 * Description: Get Information of YouTube video
 * Site: http://www.zarpele.com.ar
 * License: GNU GENERAL PUBLIC LICENSE (http://www.gnu.org/licenses/gpl.html)
 * Version: 1.1
 */?>
<?php
require_once 'youtube.class.php';

$url = 'http://www.youtube.com/watch?v=5ocq6_3-nEw';
$youtube = new Youtube($url);

//$id = '5ocq6_3-nEw';
//$youtube = new Youtube($id);
?>

<h2>Video Data</h2>
<p>
    <strong>Title: </strong>
    <?php echo $youtube->getTitle()?>
</p>

<p>
    <strong>Valid: </strong>
    <?php var_dump($youtube->valid())?>
</p>

<p>
    <strong>Published: </strong>
    <?php echo $youtube->getPublished()?>
</p>

<p>
    <strong>Updated: </strong>
    <?php echo $youtube->getUpdated()?>
</p>

<p>
    <strong>Category: </strong>
    <?php echo $youtube->getCategory()?>
</p>

<p>
    <strong>Tags: </strong>
    <?php var_dump($youtube->getTags())?>
</p>

<p>
    <strong>Content: </strong>
    <?php echo $youtube->getContent()?>
</p>

<p>
    <strong>Description: </strong>
    <?php echo $youtube->getDescription()?>
</p>

<p>
    <strong>Link: </strong>
    <?php echo $youtube->getUrl()?>
</p>

<p>
    <strong>Imagen: </strong>
    <?php echo $youtube->getImageUrl('default')?><br/>
    <img src="<?php echo $youtube->getImageUrl('default')?>" alt=""/>
    <img src="<?php echo $youtube->getImageUrl(0)?>" alt=""/>
    <img src="<?php echo $youtube->getImageUrl(1)?>" alt=""/>
    <img src="<?php echo $youtube->getImageUrl(2)?>" alt=""/>
    <img src="<?php echo $youtube->getImageUrl(3)?>" alt=""/>
</p>

<h2>Author Data</h2>
<p>
    <strong>Author Name: </strong>
    <?php echo $youtube->getAuthorName()?>
</p>

<p>
    <strong>Author Url: </strong>
    <?php echo $youtube->getAuthorUrl()?>
</p>

<p>
    <strong>Author Uri: </strong>
    <?php echo $youtube->getAuthorUri()?>
</p>

<p>
    <strong>Video: </strong><br/>
    <?php $options = array('autoplay' => 1);?>
    <?php echo $youtube->getEmbeb($options);?>
</p>

Google Code Page | http://code.google.com/p/simple-class-youtube/

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