$name){
$instructions[] = array($functions[$name], $matches[3][$index]);
}
return $instructions;
}
}
}
return false;
}
// YouTube is capitalized twice because that's how youtube itself does it:
// https://developers.google.com/youtube/v3/code_samples/php
class YouTubeDownloader {
private $storage_dir;
private $cookie_dir;
private $itag_info = array(
18 => "MP4 360p",
22 => "MP4 720p (HD)",
37 => "MP4 1080",
38 => "MP4 3072p",
// questionable MP4s
59 => "MP4 480p",
78 => "MP4 480p",
43 => "WebM 360p",
17 => "3GP 144p"
);
function __construct(){
$this->storage_dir = sys_get_temp_dir();
$this->cookie_dir = sys_get_temp_dir();
}
function setStorageDir($dir){
$this->storage_dir = $dir;
}
// what identifies each request? user agent, cookies...
public function curl($url){
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 6.3; WOW64; rv:49.0) Gecko/20100101 Firefox/49.0');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HEADER, 0);
//curl_setopt($ch, CURLOPT_COOKIEJAR, $tmpfname);
//curl_setopt($ch, CURLOPT_COOKIEFILE, $tmpfname);
//curl_setopt($ch, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
$result = curl_exec($ch);
curl_close($ch);
return $result;
}
public static function head($url){
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_HEADER, 1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 0);
curl_setopt($ch, CURLOPT_NOBODY, 1);
$result = curl_exec($ch);
curl_close($ch);
return http_parse_headers($result);
}
// html code of watch?v=aaa
private function getInstructions($html){
//
// check what player version that video is using
if(preg_match('@storage_dir.'/'.md5($player_url);
if(file_exists($file_path)){
// unserialize could fail on empty file
$str = file_get_contents($file_path);
return unserialize($str);
} else {
$js_code = $this->curl($player_url);
$instructions = sig_js_decode($js_code);
if($instructions){
file_put_contents($file_path, serialize($instructions));
return $instructions;
}
}
}
return false;
}
// this is in beta mode!!
public function stream($id){
$links = $this->getDownloadLinks($id, "mp4");
if(count($links) == 0){
die("no url found!");
}
// grab first available MP4 link
$url = $links[0]['url'];
// request headers
$headers = array(
'User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:49.0) Gecko/20100101 Firefox/49.0'
);
if(isset($_SERVER['HTTP_RANGE'])){
$headers[] = 'Range: '.$_SERVER['HTTP_RANGE'];
}
$ch = curl_init();
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 0);
// we deal with this ourselves
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 0);
curl_setopt($ch, CURLOPT_HEADER, 0);
// whether request to video success
$headers = '';
$headers_sent = false;
$success = false;
curl_setopt($ch, CURLOPT_HEADERFUNCTION, function($ch, $data) use (&$headers, &$headers_sent){
$headers .= $data;
// this should be first line
if(preg_match('@HTTP\/\d\.\d\s(\d+)@', $data, $matches)){
$status_code = $matches[1];
// status=ok or partial content
if($status_code == 200 || $status_code == 206){
$headers_sent = true;
header(rtrim($data));
}
} else {
// only headers we wish to forward back to the client
$forward = array('content-type', 'content-length', 'accept-ranges', 'content-range');
$parts = explode(':', $data, 2);
if($headers_sent && count($parts) == 2 && in_array(trim(strtolower($parts[0])), $forward)){
header(rtrim($data));
}
}
return strlen($data);
});
// if response is empty - this never gets called
curl_setopt($ch, CURLOPT_WRITEFUNCTION, function($curl, $data) use (&$headers_sent){
if($headers_sent){
echo $data;
flush();
}
return strlen($data);
});
$ret = @curl_exec($ch);
$error = curl_error($ch);
curl_close($ch);
// if we are still here by now, return status_code
return true;
}
// extract youtube video_id from any piece of text
public function extractId($str){
if(preg_match('/[a-z0-9_-]{11}/i', $str, $matches)){
return $matches[0];
}
return false;
}
// selector by format: mp4 360,
private function selectFirst($links, $selector){
$result = array();
$formats = preg_split('/\s*,\s*/', $selector);
// has to be in this order
foreach($formats as $f){
foreach($links as $l){
if(stripos($l['format'], $f) !== false || $f == 'any'){
$result[] = $l;
}
}
}
return $result;
}
// options | deep_links | append_redirector
public function getDownloadLinks($id, $selector = false){
$result = array();
$instructions = array();
// you can input HTML of /watch? page directory instead of id
if(strpos($id, '