<?php

/*
   +-------------------------------------------------------------+
   | Copyright (c) 2014 Facebook, Inc. (http://www.facebook.com) |
   +-------------------------------------------------------------+
*/

error_reporting(-1);

class Point2 
{
	private static $pointCount = 0;

	public $x;		// Cartesian x-coordinate
	public $y;		// Cartesian y-coordinate

	public static function getPointCount() 
	{
		return self::$pointCount;
	}

	public function __construct($x = 0, $y = 0) 
	{
		$this->x = $x;
		$this->y = $y;
		++self::$pointCount;
	}

	public function __destruct() 
	{
		--self::$pointCount;
	}
///*
	public function __clone() 
	{
		++self::$pointCount;

		echo "Inside " . __METHOD__ . ", point count = " . self::$pointCount . "\n";

//		return 999;	// ignored; not passed along as the result of 'clone'

	}
//*/

	public function __toString() 
	{

		return '(' . $this->x . ',' . $this->y . ')';
	}	
}