kaptanasi adlı üyeden alıntı: mesajı görüntüle

@saintx; hocam vps ayarlamam lazım onun için. yani buna pek değecek birşey değil açıkçası
stabil olmasa da işimi görsün başlangıçta kafi.
mesela video işi arkadaşın verdiğini geliştirerek halledilebilir buna benzer mp3 örneği verebilirsen sevinirim. veya youtube-mp3.org sitesinden de çekebiliriz.
ayrıca ilgin için teşekkürler

<?php
class YoutubeToMP3 {
	const DOWNLOAD = 1;
	const LINK = 2;
	/**
	 * Obtem o link de download do MP3 de um video do YouTube
	 * @param  string  $url    URL do video no YouTube
	 * @param  integer $action Acão que será executada com o link (YoutubeToMP3::DOWNLOAD, YoutubeToMP3::LINK) 
	 * @return mixed           Quando o parametro $action for definido como YoutubeToMP3::DOWNLOAD redireciona 
	 *                         para o download do arquivo, quando YoutubeToMP3::LINK traz o link como retorno
	 */
	public static function get($url, $action = self::LINK) {
		$currentTime = time();
		$videoId = self::getYoutubeId($url);
		$itemInfoUrl = "http://www.youtube-mp3.org/a/itemInfo/?video_id={$videoId}&ac=www&t=grp&r={$currentTime}";
		$itemInfo = self::httpRequest($itemInfoUrl);
		$sequence = $videoId . $currentTime;
		$requestId = $itemInfo['h'];
		$cc = self::cc($sequence);
		
		$MP3URL = "http://www.youtube-mp3.org/get?ab=128&video_id={$videoId}&h={$requestId}&r={$currentTime}.{$cc}";
		
		if ($action == self::DOWNLOAD):
			self::redirect($MP3URL);
		else:
			return $MP3URL;
		endif;
	}
	/**
	 * Realiza uma requisição do tipo GET para uma url dada
	 * @param  string $url Url que será requisitada
	 * @return array       Array associativo do JSON retornado
	 */
	private static function httpRequest ($url) {
		$ch = curl_init();
		
		curl_setopt($ch, CURLOPT_URL, $url);
		curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
		curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
		$result = curl_exec($ch);
		curl_close($ch);
		// Clear response string
		$jsonString = str_replace(array('info = ', ';'), '', $result);
		$parsedJSON = json_decode($jsonString, true);
		return $parsedJSON;
	}
	/**
	 * Obtem o ID do um video do YouTube a partir de uma URL
	 * @param  string $url URL do video
	 * @return mixed       String com o id caso seja uma URL válida ou false do contrário
	 */
	private static function getYoutubeId ($url) {
		$pattern = '%^(?:https?://)?(?:www\.)?(?:youtu\.be/|youtube\.com(?:/embed/|/v/|.*v=))([\w-]{10,12})($|&).*$%x';
		$result = preg_match($pattern, $url, $matches);
		
		if ($result !== false):
			return $matches[1];
		endif;
		return false;
	}
	/**
	 * Gera uma sequencia necessária para a API do youtube-mp3.org
	 * @param  string $a Id do video concatenado com o timestamp atual
	 * @return string    Sequencia
	 */
	private static function cc ($a) {
		$AM = 65521; 
		$c = 1; 
		$b = 0;
		$d; 
		$e;
		for ($e = 0; $e < strlen($a); $e++):
			$d = self::charCodeAt($a,$e);
		$c = ($c + $d) % $AM;
		$b = ($b + $c) % $AM;
		endfor;
		return $b << 16 | $c;
	}
	/**
	 * Metodo utilitário
	 */
	private	static function charCodeAt($str, $i){
		return ord(substr($str, $i, 1));
	}
	/**
	 * Header Redirect
	 *
	 * Header redirect in two flavors
	 * For very fine grained control over headers, you could use the Output
	 * Library's set_header() function.
	 *
	 * @param string $uri URL
	 * @param string $method Redirect method  'auto', 'location' or 'refresh'
	 * @param int    $code HTTP Response status code
	 * @return void
	 */
	private static function redirect ($uri = '', $method = 'auto', $code = NULL) {
		if (!preg_match('#^(\w+:)?//#i', $uri)) {
			$uri = site_url($uri);
		}
		if ($method === 'auto' && isset($_SERVER['SERVER_SOFTWARE']) && strpos($_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS') !== FALSE) {
			$method = 'refresh';
		} elseif ($method !== 'refresh' && (empty($code) OR ! is_numeric($code))) {
			if (isset($_SERVER['SERVER_PROTOCOL'], $_SERVER['REQUEST_METHOD']) && $_SERVER['SERVER_PROTOCOL'] === 'HTTP/1.1') {
				$code = ($_SERVER['REQUEST_METHOD'] !== 'GET')? 303 : 307;
			} else {
				$code = 302;
			}
		}
		switch ($method) {
			case 'refresh':
				header('Refresh:0;url='.$uri);
			break;
			default:
				header('Location: '.$uri, TRUE, $code);
			break;
		}
		exit;
	}
}
YoutubeToMP3::get('http://www.youtube.com/watch?v=B2m_WnXjqnM', YoutubeToMP3::DOWNLOAD);
?>