test.php
<?php
$txt = "http://hiphotos.baidu.com/stupidet/pic/item/4f1b8cfb4c33b7254e4aea69.jpg";
//$txt=$_GET['url'];
header("content-type:image/jpeg");
echo referfile($txt,'');
exit('xxxx');
function referfile($url,$refer='http://image.baidu.com/') { //这里把$refer=''设为空,也可以。
$opt=array('http'=>array('header'=>"Referer:$refer
Host: hiphotos.baidu.com
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0
"));
$context=stream_context_create($opt);
return file_get_contents($url,false,$context);
}
?>
test1.php: //通过了头部处理可以访问图片
<img src="test.php" />
test2.php : //直接访问无法
<img src="http://hiphotos.baidu.com/stupidet/pic/item/4f1b8cfb4c33b7254e4aea69.jpg" />