resizing a image on the server

[Delcypher]

Hi i know this is possible, because i use a script that does this, but looking at the script i couldn't understand what quite was happenning. I need to be able to resize a image on the server. So bascially open it, resize it and overright it.

NOTE: NOT USING MOGRIFY, ive seen the article on here.

So i was wondering if any one could show me a basic example using these variables.

$image_location
$original_width
$original_height
$new_width
$new_height

[ScubaKing22]

Here is a function written by cgraz, who had a similar problem:

<? 

function jpgresize ( $srcfile, $dsrd_width, $dsrd_height, $upload_dir, $dsrd_img_name ) { 

//function written for using a form to upload an image 


 list($imagew, $imageh, $type, $attrib) = getimagesize($srcfile); // get variables for image width and height 


 // check image size to make sure it's under desired width x desired height 

   if((($imagew > $dsrd_width) || ($imageh > $dsrd_height)) && ($type == "2")) {     // image width or height is greater than what you want 

      if($imageh > $imagew) { 
         $ratio = ($imageh/$imagew); 

         $new_h = $dsrd_height; 
         $new_w = ($new_h/$ratio);  
      } 

      if($imagew > $imageh) { 
         $ratio = ($imagew / $imageh); 

         $new_w = $dsrd_width;  
         $new_h = ($new_w/$ratio); 
      } 

      if($imagew == $imageh) { 
         $ratio = "1"; 

         $new_w = $dsrd_height; 
         $new_h = $dsrd_height; 
      } 


         $dst_img=ImageCreate($new_w,$new_h);   
         $src_img=ImageCreateFromJpeg($srcfile);   

          ImageCopyResized($dst_img,$src_img,0,0,0,0,$new_w,
$new_h,ImageSX($src_img),ImageSY($src_img));   

         $newfilename1 = "$upload_dir/$dsrd_img_name";  
         ImageJpeg($dst_img, $newfilename1);  

         echo "Image was resized and uploaded"; 



   } else { //image wasn't too big (or was format other than jpeg)... upload as normal 

       copy($srcfile, "$upload_dir/$dsrd_img_name"); 
       echo "Image didn't need to be resized and has been uploaded"; 


   } 


} 


?>

You should be able to modify it to suit your needs if not just use it, assuming it's ok with him.
You can find the original thread here (The function is in the last post). Hope this helps 😉