Cropping of Image from Center Co-ordinates

<?PHP
/**************************************************************************************
Author: S.M. Zamshed Farhan <zfprince@gmail.com>
LAST UPDATE: 2013-01-12
**************************************************************************************/
class CropCenter
{
	
	function crop_center($old_name, $new_name, $crop_width, $crop_height) {
	
		if(copy($old_name, $new_name)) {
		
			// READ WIDTH & HEIGHT OF ORIGINAL IMAGE
			list($current_width, $current_height) = getimagesize($new_name);
			
			// CENTER OF GIVEN IMAGE, WHERE WE WILL START THE CROPPING
			$left	=	($current_width / 2) - ($crop_width / 2);
			$top 	=	($current_height / 2) - ($crop_height / 2);
			
			// BUILD AN IMAGE WITH CROPPED PART
			$new_canvas = imagecreatetruecolor($crop_width, $crop_height);
			$new_image = imagecreatefromjpeg($new_name);
			imagecopy($new_canvas, $new_image, 0, 0, $left, $top, $current_width, $current_height);
			imagejpeg($new_canvas, $new_name, 100);
		
		} else {
			// Do Nothing
		}
		
		return true;
	}


}
?>