Hejsan svejsan..
Det finns ett bra exempel i manualen, http://www.php.net/manual/en/function.imagecopyresized.php .
<?
$src_img = imagecreatefromjpeg($imagefile);
$new_w = imagesx($src_img)/4;
$new_h = imagesy($src_img)/4;
$dst_img = imagecreate($new_w,$new_h);
imagecopyresized($dst_img,$src_img,0,0,0,0,$new_w,$new_h,imagesx($src_img),imagesy($src_img));
imagejpeg($dst_img, "scratch/$imagefile");
echo "<img src=scratch/$imagefile>\n";
?>
Här finns lite övrig info, http://cgi.webforum.nu/wf/Forum12/HTML/001023.html
/j
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R6