1<?php 2 3class Point { 4 var $x; 5 var $y; 6 7 function Point($x, $y) { 8 $this->x = $x; 9 $this->y = $y; 10 } 11 12 function _clone() { 13 return new Point($this->x, $this->y); 14 } 15} 16 17?>