为什么浏览器显示会是代码，没有图片

源自：4-1 GD库实现图片缩略图—打开图片

<?php

header("content-type:image/jpg");

$src ="image/t3.jpg";

$info = getimagesize($src);

$type = image_type_to_extension($info[2],false);

$fun = "imagecreatefrom{$type}";

$image = $fun($src);

$imagemark = "image/t1.jpg";

$info2 = getimagesize($imagemark);

$type2 = image_type_to_extension($info2[2],false);

$fun2 = "imagecreatefrom{$type2}";

$water = $fun2($imagemark);

imagecopymerge($image,$water,20,30,0,0,$info2[2],$info2[1],30);

header("Content-type:".$info['mine']);

$func="image{$type}";

$func($image);

imagedestroy($water);

提问者：levosam 2016-11-06 15:34