获取qq头像

<?php
header('content-type: image/jpeg');
$QQ = $_GET['qq'];
$time2 = date('Y-m-d H:i:s');
$t = strtotime($time2);
echo file_get_contents("http://q1.qlogo.cn/g?b=qq&nk=".$QQ . "&s=100&t=" .$t);