Thumbs have black fill color

Hy, i have a little piece of code here wich creates thubnail from a jpg image and it keeps its aspect ratio, and the remaining space is filled with black, but the thing is i want to fill that space with transparent or white, cause black looks very ugly on my site.

heres the piece of code, you can see i have tried with imagefill function but still doesnt work

if(isset($_POST['Submit'])){ 
     $thumbsize = 90; // dimensiunea thumbnail-ului

     $filedir = 'pics/'; // directorul imaginii pe care o vei uploada
     $thumbdir = 'pics/'; // directorul imaginii thumbnail
     $prefix = 'small_'; // prefixul adaugat imaginii
	 $width = 90;
		$height = 90;
     $maxfile = '2000000'; 
     $mode = '0666'; 
      
     $userfile_name = $_FILES['image']['name']; 
     $userfile_tmp = $_FILES['image']['tmp_name']; 
     $userfile_size = $_FILES['image']['size']; 
     $userfile_type = $_FILES['image']['type']; 
      
     if (isset($_FILES['image']['name'])){ 
         $prod_img = $filedir.$userfile_name; 
         $prod_img_thumb = $thumbdir.$prefix.$userfile_name; 

         move_uploaded_file($userfile_tmp, $prod_img); 
         chmod ($prod_img, octdec($mode)); 
		 
		 
	
		 
		 // Get new dimensions
	list($width_orig, $height_orig) = getimagesize($prod_img);

	$ratio_orig = $width_orig/$height_orig;

	if ($width/$height > $ratio_orig) {
   $width = $height*$ratio_orig;
	} else {
   $height = $width/$ratio_orig;
	}
		 
		 
         

         $destimg=ImageCreateTrueColor($thumbsize, $thumbsize) or die('Problem In Creeare thumbnail'); 
         $srcimg=ImageCreateFromJPEG($prod_img) or die('Problem la deschiderea imaginii sursa'); 
		 imagefill($destimg, 0, 0, $alb);
         ImageJPEG($destimg, null, 93) or die('Problema la salvare');
         ImageCopyResampled($destimg,$srcimg,-($width/2) + ($thumbsize/2), -($height/2) + ($thumbsize/2), 0, 0, $width, $height, $width_orig, $height_orig) or die('Problem In resizing'); 
		 $alb = imagecolorallocate($destimg, 255, 255, 255);
         imagedestroy($destimg); 

Code (markup):

I have attached a thumb so you can see the how it looks like now.

By the way sorry for my bad english.

 

Have you tried converting them to PNGs? JPGs don't support transparency...

 

Try putting $alb before the imagefill:

         $destimg=ImageCreateTrueColor($thumbsize, $thumbsize) or die('Problem In Creeare thumbnail'); 
         $srcimg=ImageCreateFromJPEG($prod_img) or die('Problem la deschiderea imaginii sursa'); 
		[b] $alb = imagecolorallocate($destimg, 255, 255, 255);
		 imagefill($destimg, 0, 0, $alb);[/b]
         ImageJPEG($destimg, null, 93) or die('Problema la salvare');
         ImageCopyResampled($destimg,$srcimg,-($width/2) + ($thumbsize/2), -($height/2) + ($thumbsize/2), 0, 0, $width, $height, $width_orig, $height_orig) or die('Problem In resizing'); 
         imagedestroy($destimg);

Code (markup):

 

Nope it doesnt work, how can i convert them to png ? or other ways of filling with white or transparent ?

 

Can anyone help me please ?

 

before imagefill function add this line

$alb= ImageColorAllocate($image, 255, 255, 255);

Regards

Alex