在php中给图片增加水印有imagecreatefromjpeg imagecreatefrompng imagecopymerge imagejpeg就成了,只要你设置原图与水印图片就成了,下面看实例.

header("content-type: image/jpeg"); 
$filename='temp/www.phprm.com/phprm.com.jpg'; 
$im=imagecreatefromjpeg($filename); 
$s=imagecreatefrompng('mb.phprm.com/pic/water_template.png'); 
imagecopymerge($im,$s,0,200,0,0,365,27,20); 
imagejpeg($im);

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