<?php

$src = '02.jpg';

? ? $info = getimagesize($src);

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

? ?$fun = "imagecreatefrom{$type}";

? ?$image = $fun($src);

? ?$font = "simhei.ttf";

? ?$content = "你好，美女";

? ?$color = imagecolorallocatealpha($image,255,0,0,50);

? ?imagettftext($image,20,0,20,30,$color,$font,$content);

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

? ?$func = "image{$type}";

? ?$func($image);

? ?imagedestroy($image);

?>