keepvid curl

<?php
function auto($url){
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL,$url);
curl_setopt($curl, CURLOPT_RETURNTRANSFER,1);
curl_setopt($curl, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($curl, CURLOPT_HEADER, 1);
curl_setopt($curl, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2228.0 Safari/537.36");
$ch = curl_exec($curl);
curl_close($curl);
return($ch);
}

?>
<!DOCTYPE html PUBLIC "-//WAPFORUM//DTD XHTML Mobile 1.0//EN" "http://www.wapforum.org/DTD/xhtml-mobile10.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>
Keepvid
</title>
<link rel="shortcut icon" href="favicon.ico"/>
</head>
<body style="margin: auto; max-width: 640px;">
<span>
Youtube Url :
</span><br>
<form method="post">
<input type="text" name="link" placeholder="http://youtube.com/watch?v=sRFg5pR-Nt4" value="<?php echo (isset($_POST['link'])) ? htmlentities($_POST['link']) : ''; ?>" class="input" style="width:95%">
<br>
<input type="submit" name="post" value="Get Download Link">
</form>
<br>

<hr style="background-color:#cccccc;height:1px;border:0px solid #fff;margin:0.3em auto;width:100%;" />
<?php
if(isset($_POST['post'])){
$abc = $_POST['link'];
$baba = auto('http://keepvid.com/?url='.$abc);
$bc = strpos($baba, 'clear="both" /><br /></div>');
$confirms = substr($baba, $bc);
$confir = explode('<a',$confirms);
for($i=1;$i<= count($confir);$i++){
$link = substr($confir[$i-1], strpos($confir[$i-1], 'href=') + 6);
$link = substr($link, 0, strpos($link, '</b>'));
if(ereg('googlevideo', $link)){
$link=str_replace('&amp;','&',$link);
$link=str_replace('" class="l" style=', '', $link);
$url = substr($link, 0, strpos($link, '"'));
if(ereg('download=', $link)){
$panjang = substr($link, strpos($link, 'download="') + 10);
$judul = substr($panjang, 0, strpos($panjang, '">'));
echo '<a class="fcs" href="'.$url.'">&raquo; '.$judul.'</a><hr style="background-color:#cccccc;height:1px;border:0px solid #fff;margin:0.3em auto;width:100%;" />';
}
}
}
}

?>