Image resizer script in php

Hello Guyz, I want to share something on how to resize image using PHP.
Below is the script to resize an image. Hope it will help.
If you have questions, you can email me here alreymark

Instructions:

1. Name the script whatever you want be sure it is a php file.
2. based on the script below I have 3 directory naming thumbs1, thumbs2 and thumbs3. This directories will be the location of the resized image based on category. ($cat=1, 2, 3)
3. Choose an image, it should be in jpeg format and place it together with the script.

for example if you are in the root of your site with a directory "/test/", you should come up with this location.

http://your-site.com/test/
http://your-site.com/test/resizer.php
http://your-site.com/test/testing.jpeg
http://your-site.com/test/thumbs1/
http://your-site.com/test/thumbs2/
http://your-site.com/test/thumbs3/

4. This should done the work. :)


<?php
function retrieveFolder($cat){
 switch($cat){
     case 1: $myfolder="thumbs1";break;
     case 2: $myfolder="thumbs2";break;
     case 3: $myfolder="thumbs3";break;
 }//end switch

 return $myfolder;
}//end function

function retrieveDimension($cat,$w,$h){
 $d=array();
 switch($cat)
 {
     case 1://First thumb size
         if($w>$h){
             $d[0] = 208 ;
             $d[1] = $h * 208 /$w;
         }
         if($h>$w){
             $d[0] = $w * 230/$h;
             $d[1] = 230;
         }
     break;

     case 2://second thumb size
         if($w>$h){
             $d[0] = 96 ;
             $d[1] = $h * 96 /$w;
         }
         if($h>$w){
             $d[0] = $w *106/$h;
             $d[1] = 106;
         }
     break;

     case 3://3rd thumb size
         if($w>$h){
             $d[0] = 120;
             $d[1] = $h * 120 /$w;
         }
         if($h>$w){
             $d[0] = $w *127/$h;
             $d[1] = 127;
         }
     break;
 }

 return $d;
}//end function

class ResizeImage{
 function ResizeImage($filename,$image_cat){
     $myfolder=retrieveFolder($image_cat);
     if(getimagesize($filename)){
         $final_filename=$myfolder."/".basename($filename);
         echo "base ".$filename." final ".$final_filename."
";
         list($width, $height) = getimagesize($filename);
         $dimension=retrieveDimension($image_cat,$width,$height);
         $new_width=$dimension[0];
         $new_height=$dimension[1];
         $image_p =imagecreatetruecolor($new_width, $new_height);
         $image =imagecreatefromjpeg($filename);
         imagecopyresampled($image_p, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
         imagejpeg($image_p,$final_filename,72);
         imagedestroy($image_p);
         imagedestroy($image);
     }//if(file_exists($filename)
     $this->rawfile=$filename;
     $this->picfile=$final_filename;
 }//end Constructor
 function getFile(){return $this->picfile;}
 function destroy(){    unset($this);}
}//end Class

$image = new ResizeImage("testing.jpg", 1);
$image->destroy();
$image = new ResizeImage("testing.jpg", 2);
$image->destroy();
$image = new ResizeImage("testing.jpg", 3);
$image->destroy();
?>