header("Content-type:image/png");
set_time_limit(0);//设置PHP超时时间
$url = $_GET['url'];
$url = "http://vcer.baidu.com/verify";
$imginfo = GetImageSize ( $url );
$imgw = $imginfo [0];
$imgh = $imginfo [1];
$bg = imagecreatetruecolor($imgw,$imgh);
$image = imagecreatefromjpeg($url);
imagecolorallocate($image,255,255,255);
imagecopy($bg,$image,0,0, 0,0,$imgw,$imgh);
imagedestroy($image);
ImagePng($bg);
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