Codice PHP:
<?php
// Load the stamp and the photo to apply the watermark to
$im imagecreatefromjpeg('photo.jpeg');

// First we create our stamp image manually from GD
$stamp imagecreatetruecolor(10070);
imagefilledrectangle($stamp0099690x0000FF);
imagefilledrectangle($stamp9990600xFFFFFF);
$im imagecreatefromjpeg('photo.jpeg');
imagestring($stamp52020'libGD'0x0000FF);
imagestring($stamp32040'(c) 2007-9'0x0000FF);

// Set the margins for the stamp and get the height/width of the stamp image
$marge_right 10;
$marge_bottom 10;
$sx imagesx($stamp);
$sy imagesy($stamp);

// Merge the stamp onto our photo with an opacity of 50%
imagecopymerge($im$stampimagesx($im) - $sx $marge_rightimagesy($im) - $sy $marge_bottom00imagesx($stamp), imagesy($stamp), 50);

// Save the image to file and free memory
imagepng($im'photo_stamp.png');
imagedestroy($im);

?>
ho messo quesot ma non so come procedere per fare l'upload