[GD] Trasparenza Testo

[trusthat]

ho rinunciato alla trasparenza.. vorrei sapere come faccio a salvare su un file jpeg l'immagine creata..
il codice è qui sotto l'ho copiato da un altro topic.

// Set the content-type 
header("Content-type: image/png"); 
$width=400;//aggiunto da nivasio :9 
$height=30;//aggiunto da nivasio :9 
// Create the image 
//$im = imagecreatetruecolor($width, $height);//aggiunto da nivasio :9 
$im = imagecreatefromjpeg('prova.jpg');

// Create some colors 
$white = imagecolorallocate($im, 255, 255, 255); 
$grey = imagecolorallocate($im, 128, 128, 128); 
$black = imagecolorallocate($im, 0, 0, 0); 
$verde = imagecolorallocate($im, 0, 255, 0); //aggiunto da nivasio :9 
// The text to draw 
$text = '(c) Copyright'; 
// Replace path by your own font path 

$font="times.ttf";
$bordo=3;//aggiunto da nivasio :9 

// Add the text 
    imagettftext($im, 12,0, -10, 30, $white, $font, $text); 
    imagettftext($im, 12,0, 250, 30, $white, $font, $text);     
    imagettftext($im, 12,0, 510, 30, $white, $font, $text); 
    
    imagettftext($im, 12,0, -30, 70, $white, $font, $text); 
    imagettftext($im, 12,0, 230, 70, $white, $font, $text);     
    imagettftext($im, 12,0, 490, 70, $white, $font, $text); 
    
    imagettftext($im, 12,0, -50, 110, $white, $font, $text); 
    imagettftext($im, 12,0, 210, 110, $white, $font, $text);     
    imagettftext($im, 12,0, 470, 110, $white, $font, $text); 

    imagettftext($im, 12,0, -10, 150, $white, $font, $text); 
    imagettftext($im, 12,0, 250, 150, $white, $font, $text);     
    imagettftext($im, 12,0, 510, 150, $white, $font, $text); 
    
    imagettftext($im, 12,0, -30, 190, $white, $font, $text); 
    imagettftext($im, 12,0, 230, 190, $white, $font, $text);     
    imagettftext($im, 12,0, 490, 190, $white, $font, $text); 
    
    imagettftext($im, 12,0, -50, 230, $white, $font, $text); 
    imagettftext($im, 12,0, 210, 230, $white, $font, $text);     
    imagettftext($im, 12,0, 470, 230, $white, $font, $text); 

    imagettftext($im, 12,0, -10, 270, $white, $font, $text); 
    imagettftext($im, 12,0, 250, 270, $white, $font, $text);     
    imagettftext($im, 12,0, 510, 270, $white, $font, $text); 
    
    imagettftext($im, 12,0, -30, 310, $white, $font, $text); 
    imagettftext($im, 12,0, 230, 310, $white, $font, $text);     
    imagettftext($im, 12,0, 490, 310, $white, $font, $text); 
    
    imagettftext($im, 12,0, -50, 350, $white, $font, $text); 
    imagettftext($im, 12,0, 210, 350, $white, $font, $text);     
    imagettftext($im, 12,0, 470, 350, $white, $font, $text); 

    imagettftext($im, 12,0, -10, 390, $white, $font, $text); 
    imagettftext($im, 12,0, 250, 390, $white, $font, $text);     
    imagettftext($im, 12,0, 510, 390, $white, $font, $text); 
    
    imagettftext($im, 12,0, -30, 430, $white, $font, $text); 
    imagettftext($im, 12,0, 230, 430, $white, $font, $text);     
    imagettftext($im, 12,0, 490, 430, $white, $font, $text); 
    
    imagettftext($im, 12,0, -50, 470, $white, $font, $text); 
    imagettftext($im, 12,0, 210, 470, $white, $font, $text);     
    imagettftext($im, 12,0, 470, 470, $white, $font, $text); 

// Using imagepng() results in clearer text compared with imagejpeg() 

imagejpeg($im); 


imagedestroy($im);