<?php
$src = "02.png";
$info = getimagesize($src);
$type = image_type_to_extension($info[2],false);
$fun = "imagecreatefrom{$type}";
$image = $fun($src);
$font = "arial.ttf";
$content = "歡迎來到PHP中文網";
$col = imagecolorallocatealpha($image, 255, 255, 255, 30);
imagettftext($image, 20, 0, 20, 30, $col, $font, $content);
header("內容類型：".$info['mime']);
$func = "映像{$type}";
$func($image);
$func($映像,'FFF.'.$type);
imagedestroy($image);