PHP에서 이미지 크기 검색 속도를 높이는 방법: file_get_contents가 솔루션입니까?

<code class="php">function ranger($url){
    $headers = array(
    "Range: bytes=0-32768"
    );

    $curl = curl_init($url);
    curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
    $data = curl_exec($curl);
    curl_close($curl);
    return $data;
}</code>

<code class="php">$im = imagecreatefromstring($raw);
$width = imagesx($im);
$height = imagesy($im);</code>

<code class="php">$start = microtime(true);

$url = "http://news.softpedia.com/images/news2/Debian-Turns-15-2.jpeg";

$raw = ranger($url);
$im = imagecreatefromstring($raw);

$width = imagesx($im);
$height = imagesy($im);

$stop = round(microtime(true) - $start, 5);

echo $width." x ".$height." ({$stop}s)";</code>