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 $data;}$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)";测试…
640 x 480（0.20859s）
加载32kb数据对我有用。
