// ------ Define's --------------
 
$file_folder = $_SERVER['DOCUMENT_ROOT']."/images";
$file_image  = $_GET['image'];
$file_size   = $_GET['size'];
 
// ------------------------------
 
if(empty($file_size)){
    $file_size = 50;
}
 
function img_resize($src, $dest, $width, $height, $rgb = 0xFFFFFF, $quality = 100) {
    $size = getimagesize($src);
 
    if ($size === false) {
        return false;
    }
 
    $format = strtolower(substr($size['mime'], strpos($size['mime'], '/') + 1));
    $icfunc = 'imagecreatefrom'.$format;
 
    if (!function_exists($icfunc)) {
        return false;
    }
 
    $x_ratio = $width  / $size[0];
    $y_ratio = $height / $size[1];
 
    if ($height == 0) {
 
        $y_ratio = $x_ratio;
        $height  = $y_ratio * $size[1];
 
    } elseif ($width == 0) {
 
        $x_ratio = $y_ratio;
        $width   = $x_ratio * $size[0];
 
    }
 
    $ratio       = min($x_ratio, $y_ratio);
    $use_x_ratio = ($x_ratio == $ratio);
 
    $new_width   = $use_x_ratio  ? $width  : floor($size[0] * $ratio);
    $new_height  = !$use_x_ratio ? $height : floor($size[1] * $ratio);
    $new_left    = $use_x_ratio  ? 0 : floor(($width - $new_width)   / 2);
    $new_top     = !$use_x_ratio ? 0 : floor(($height - $new_height) / 2);
 
    $isrc  = $icfunc($src);
    $idest = imagecreatetruecolor($width, $height);
 
    imagefill($idest, 0, 0, $rgb);
    imagecopyresampled($idest, $isrc, $new_left, $new_top, 0, 0, $new_width, $new_height, $size[0], $size[1]);
 
    imagejpeg($idest, $dest, $quality);
 
    imagedestroy($isrc);
    imagedestroy($idest);
 
    return true;
}
 
$file_destination_folder = $file_folder.'/'.$file_size.'/';
$file_destination        = $file_folder.'/'.$file_size.'/'.$file_image;
 
if(!file_exists($file_destination)){
 
    if (!is_dir($file_destination_folder)) {
        if(!mkdir($file_destination_folder, 0777)){
            exit();
        }
    }
 
    img_resize($file_folder.'/'.$file_image, $file_destination, $file_size, 0);
}
 
$file_final_size = getimagesize($file_destination);
 
header("Content-type: ".$file_final_size['mime']);
header('Content-Length: ' . filesize($file_destination));
readfile($file_destination);

for file in `find . -iname "*.jpg" -or -iname "*.png" -or -iname "*.jpeg"`;do
  ext=${file##*.}
  if [ -n "$ext" ]; then
    if [ "$ext" = "jpg" ]; then
      echo "optimizing ${file} as jpeg file with jpegtran"
      jpegtran -copy none -optimize -perfect -outfile temp_abracadabra_filename.jpg $file
      mv -f temp_abracadabra_filename.jpg $file;
    fi
    if [ "$ext" = "jpeg" ]; then
      echo "optimizing ${file} as jpeg file with jpegtran"
      jpegtran -copy none -optimize -perfect -outfile temp_abracadabra_filename.jpeg $file
      mv -f temp_abracadabra_filename.jpeg $file;
    fi
    if [ "$ext" = "png" ]; then
      echo "optimizing ${file} as png file with pngcrush"
      pngcrush -rem alla -reduce -brute "$file" temp_abracadabra_filename.png;
      mv -f temp_abracadabra_filename.png $file;
    fi
  fi
done;