Kohana Valid::timestamp()

gistfile1.php

<?php defined('SYSPATH') or die('No direct script access.');

class Valid extends Kohana_Valid {

	/**
	 * TODO: test
	 * http://stackoverflow.com/questions/3377537/checking-if-a-string-holds-an-integer/3377612
	 * 
	 */
	public static function timestamp($timestamp)
	{
		if ( ! (string)(int)$timestamp === $timestamp)
		{
			return Valid::date($timestamp);
		}

		return ($timestamp >= 0) AND ($timestamp <= PHP_INT_MAX);
	}

} // End Valid