a te scriptedből kiindulva sikerült megoldani a gondot 
köszönöm a segítésget 
function img_resize( $tmpname, $size , $save_dir, $save_name, $maxisheight )
{
$save_dir .= ( substr($save_dir,-1) != "/") ? "/" : "";
$gis = getimagesize($tmpname);
$type = $gis[2];
switch($type)
{
case "1": $imorig = imagecreatefromgif($tmpname); break;
case "2": $imorig = imagecreatefromjpeg($tmpname);break;
case "3": $imorig = imagecreatefrompng($tmpname); break;
default: $imorig = imagecreatefromjpeg($tmpname);
}
$x = imagesx($imorig);
$y = imagesy($imorig);
if(($gis[0] <= $size) and ($gis[1] <= $maxisheight))
{
$aw = $x;
$ah = $y;
}
elseif (($gis[1] >= $gis[0]) and ($size<$gis[0])) {
$aw=ceil($size/$gis[1]*$gis[0]);
$ah=$size;
}
elseif (($maxisheight<$gis[1]) and ($gis[0] >= $gis[1])) {
$ah=ceil($maxisheight/$gis[0]*$gis[1]);
$aw=$maxisheight;
}
$im = imagecreatetruecolor($aw,$ah);
if (imagecopyresampled($im,$imorig , 0,0,0,0,$aw,$ah,$x,$y))
if (imagejpeg($im, $save_dir.$save_name))
return true;
else
return false;
}
Weblapom http://goo.gl/q0VKN || Linkkatalógusom http://goo.gl/91Qs4
