Translucent Watermarking

<?php

$rd=imagecreatefromjpeg('testing.jpg');
$rs=imagecreatefrompng('watermark2.png');
imagecopymerge($rd,
                          $rs,
                          0,                   // destination X
                          0,                   // destination Y
                          0,                   // source X
                          0,                   // source Y
                          imagesx($rs),  // source width
	            imagesy($rs),  // source height
                          30);                // opacity 0-100
imagejpeg($rd,'testing9.jpg');

?>

<?php

$rd=imagecreatefromjpeg('testing.jpg');
$rs=imagecreatefrompng('watermark2.png');
imagecopymerge($rd,
                          $rs,
                          0,                   // destination X
                          0,                   // destination Y
                          0,                   // source X
                          0,                   // source Y
                          imagesx($rs),  // source width
	            imagesy($rs),  // source height
                          30);                // opacity 0-100
imagejpeg($rd,'testing9.jpg');

?>