php - image creating slow down servre

Question

I have function and with this funqction I`m trying to create some images in my server

           foreach($value[0] as $imagekey => $imageval) {
                $imgname = $gancxadeba . '_' . $imagekey;
                $saveaddr = dirname(dirname($_SERVER['PHP_SELF'])).'/www/classifieds_images/';
                $as = '.JPG';
                $originalname = $imgname . $as;
                if(!file_exists($saveaddr.$originalname)) {
                    if (preg_match('/\.(jpg)$/', $imageval)) {
                        $getfile = imagecreatefromjpeg($imageval);
                    } elseif (preg_match('/\.(JPG)$/', $imageval)) {
                        $getfile = imagecreatefromjpeg($imageval);
                    } elseif (preg_match('/\.(png)$/', $imageval)) {
                        $getfile = imagecreatefrompng($imageval);
                    } else {
                        $getfile = imagecreatefromgif($imageval);
                    }
                    list($width, $height) = getimagesize($imageval);
                    $newWidth = 90;
                    $newHeight = 120;
                    $original = imagecreatetruecolor($width, $height);
                    imagecopyresampled($original, $getfile, 0, 0, 0, 0, $width, $height, $width, $height);
                    imagejpeg($original, "../www/classifieds_images/$originalname");
                    echo 'განცხადება: ' . $gancxadeba . ' ორიგინალი სურათი: ' . $imgname . ' created!' . PHP_EOL;

                    $thumbname = $imgname . '_THUMB' . $as;
                    if (!file_exists($saveaddr . $thumbname)) {
                        $thumb = imagecreatetruecolor($newWidth, $newHeight);
                        imagecopyresampled($thumb, $getfile, 0, 0, 0, 0, $newWidth, $newHeight, $width, $height);
                        imagejpeg($thumb, "../www/classifieds_images/$thumbname");
                        echo 'განცხადება: ' . $gancxadeba . ' თამბი სურათი: ' . $imgname . ' created!' . PHP_EOL;
                    }
                }
                $image[$imagekey] = $imgname;
            }

as you understand Im getting image link and then chacking if file exists and Im creating file if it not exists. but my server slow down. it is using 2GB RAM. what can I do to accelerate my server?

I tryed file_put_content() first and then creating thumb but it not working as well as gd library. so please help me to do this function quicker than is.