添加图片水印图标

<?php
header('content-type:image/jpeg');
$i=imagecreatefromjpeg('images/a.jpg');
$ww=imagesx($i);
$hh=imagesy($i);
$logo=imagecreatefrompng('images/m.png');
$w=imagesx($logo);
$h=imagesy($logo);
imagecopy($i,$logo,100,200,0,0,$w,$h);
imagejpeg($i,'images/logo_a.jpg');
imagedestroy($i);

来自为知笔记(Wiz)