uploading / resize problem

[zebdaag]

Hi i'm working on a text editor for a CMS i have a fuction where you can upload an image and if it is uploaded the image is put into the text. This always worked great without resize but i want the images to be resized then saved and then put in the text. The script I'm using for this is:

    //change image size---------------------------------------------
    $image_type = strstr($file_name, '.');
    //SWITCHES THE IMAGE CREATE FUNCTION BASED ON FILE EXTENSION
        switch($image_type) {
            case '.jpg':
                $source = imagecreatefromjpeg($file_name);
                break;
            case '.JPG':
                $source = imagecreatefromjpeg($file_name);
                break;
            case '.png':
                $source = imagecreatefrompng($file_name);
                break;
            case '.PNG':
                $source = imagecreatefrompng($file_name);
                break;
            case '.GIF':
                $source = imagecreatefromgif($file_name);
                break;
            case '.gif':
                $source = imagecreatefromgif($file_name);
                break;
            }
    //
    list($width, $height) = getimagesize($file_name);
    $propBigH        = $height/$maxHeight;
    $propBigW        = $width/$maxWidth;
    //
    if ($width > $maxWidth){
        $heightBig         = $height/$propBigW;
        $widthBig         = $maxWidth;
    }
    else{
        $heightBig         = $height;
        $widthBig         = $width;
    }
    //
    $bigImg = imagecreatetruecolor($widthBig, $heightBig);
    imagecopyresized($bigImg, $source, 0, 0, 0, 0, $widthBig, $heightBig, $width, $height);
    
    
    //---------------------------------------------------------------
    $result  =  imagejpeg($bigImg, $file_path, $qualityBig);
    if (!chmod($file_path,0755))
         $message = "change permission to 755 failed.";
    else{
      echo "<script language='JavaScript'>window.location.href = \"uploadOne.php?loaded='yes'&fileName='http://".$_SERVER['HTTP_HOST']."/CMS/img/files/".$file_name."'\";</script>";
                 "Something is wrong with uploading a file.";*/
     } 

But this is not working, i think i'm forgetting something but i don't know what.. Can someone help me with this??

I added the full script to this post as zip..
Thanks in advance..