Récupérer première image d'une url

$url = $_POST["url"];

function fetch_record($path)
{
	$file = fopen($path, "r"); 
	if (!$file)
	{
		exit("Problem occured");
	} 
	$data = '';
	while (!feof($file))
	{
		$data .= fgets($file, 1024);
	}
	return $data;
}

$string = fetch_record($url);

// fetch images
$image_regex = '/<img[^>]*'.'src=[\"|\'](.*)[\"|\']/Ui';
preg_match_all($image_regex, $string, $img, PREG_PATTERN_ORDER);
$images_array = $img[1];
$k=1;
	for ($i=0;$i<=sizeof($images_array);$i++)
	{
		if(@$images_array[$i])
		{
			if(@getimagesize(@$images_array[$i]))
			{
				list($width, $height, $type, $attr) = getimagesize(@$images_array[$i]);
				if($width >= 200 && $height >= 50 ){
				
				echo "<center><img src='".@$images_array[$i]."' max-width='520' id='".$k."' ></center>";
				
				$k++;
				
				}
			}
		}
	}