Una mano per modificare uno script

[avrilboi]

Ciao!
Potreste aiutarmi nella modifica di questo script, dato che non so molto di php?

<?php 
// useage is thumbnail.php?image=imagename.jpg 
// set for 120 px thumb 
Header("Content-type: image/jpeg"); 
$orig_image = imagecreatefromjpeg($_GET['image']); 
list($width, $height, $type, $attr) = getimagesize($_GET['image']); 
if ($width > 120) { 
$ratio = 120 / $width; 
$newheight = $ratio * $height; } 
else $newheight = $height; 
$sm_image = imagecreatetruecolor(120,$newheight) or die ("Cannot Initialize new gd image stream");; 
Imagecopyresampled($sm_image,$orig_image,0,0,0,0,120,$newheight,imagesx($orig_image),imagesy($orig_image)); 
imageJPEG($sm_image); 
imagedestroy($sm_image); 
imageDestroy($orig_image); 
?>

Da quello che ho capito, prende la larghezza e in base a quella ridimensiona il tutto, io invece voglio che prenda l'altezza e ridimensioni in base a quella, come si può fare?

[luke83]

<?php 
// useage is thumbnail.php?image=imagename.jpg 
// set for 120 px thumb 
Header("Content-type: image/jpeg"); 
$orig_image = imagecreatefromjpeg($_GET['image']); 
list($width, $height, $type, $attr) = getimagesize($_GET['image']); 
if ($height > 120) { 
$ratio = 120 / $height; 
$newwidth = $ratio * $width; } 
else $newwidth = $width; 
$sm_image = imagecreatetruecolor(120,$newwidth) or die ("Cannot Initialize new gd image stream");; 
Imagecopyresampled($sm_image,$orig_image,0,0,0,0,120,$newwidth,imagesx($orig_image),imagesy($orig_image)); 
imageJPEG($sm_image); 
imagedestroy($sm_image); 
imageDestroy($orig_image); 
?>

[avrilboi]

Grazie Luca, ma non funziona.
Ho provato però a sostituire

if ($width > 120) { 
$ratio = 120 / $width; 
$newheight = $ratio * $height; } 
else $newheight = $height; 
$sm_image = imagecreatetruecolor(120,$newheight) or die ("Cannot Initialize new gd image stream");; 
Imagecopyresampled($sm_image,$orig_image,0,0,0,0,120,$newheight,imagesx($orig_image),imagesy($orig_image)); 

con

if ($height > 120) {
$ratio = 120 /$height;
$newwidth = $ratio * $width; } 
else $newwidth = width;
$sm_image = imagecreatetruecolor($newwidth,120) or die ("Cannot Initialize new gd image stream");; 
Imagecopyresampled($sm_image,$orig_image,0,0,0,0,$newwidth,120,imagesx($orig_image),imagesy($orig_image)); 

e funziona.

[luke83]

sì, errore mio che nn mi so andato a vedere il prototipo ed ho invertito i parametri di imagecreatetruecolor

fai attenzione qui mi da che ti sei mangiato uno $

else $newwidth = width;