function crop_image($old_image,$new_image,$width,$height,$type="") 
{ 
    $dimensions = getimagesize($old_image); 
    $old_x=$dimensions[0]; 
    $old_y=$dimensions[1]; 
    
    if ($old_x < $width) 
    { 
        $width=$old_x; 
    } 
    if ($old_y < $height) 
    { 
        $height=$old_y; 
    } 
    $canvas = imagecreatetruecolor($width,$height); 
    $system= substr(strrchr($old_image, "."), 1 ); 
    if (preg_match('/png/',$system)) 
        { 
            $piece = imagecreatefrompng($old_image); 
        } 
    else if (preg_match('/gif/',$system)) 
        { 
            $piece = imagecreatefromgif($old_image); 
        } 
    else $piece = imagecreatefromjpeg($old_image); 

        $newwidth = $dimensions[0] ;/// 2; 
        $newheight = $dimensions[1];// / 2; 
    if ($newwidth>$width) 
    { 
        $cropLeft = ($newwidth/2) - ($width/2); 
        $newwidth=$width; 
    } 
    else     $cropLeft = 0; 
    if ($newheight > $height) 
    { 
        $cropHeight = ($newheight/2) - ($height/2); 
        $newheight=$height; 
    } 
    else     $cropHeight = 0;//($newheight); 

   if($system=="gif") 
   { 
      $transparent = imagecolorallocate($canvas, "255", "255", "255"); 
      imagefill($canvas, 0, 0, $transparent); 
   } 
    // Generate the cropped image 
    @imagecopyresized($canvas, $piece, 0,0, $cropLeft, $cropHeight,$newwidth, $newheight, $width, $height); 
    if (preg_match('/png/',$system)) 
        { 
            imagepng($canvas,$new_image); 
        } 
    else if (preg_match('/gif/',$system)) 
        { 
            imagegif($canvas,$new_image,90); 
        } 
    else imagejpeg($canvas,$new_image,90); 
    @imagedestroy($canvas); 
    @imagedestroy($piece); 
    
}