Note for using strtotime function in PHP

strtotime

<?php

/**
 * Dates in the m/d/y or d-m-y formats are disambiguated by looking at the separator between the various components: 
 * if the separator is a slash (/), then the American m/d/y is assumed; 
 * whereas if the separator is a dash (-) or a dot (.), then the European d-m-y format is assumed.
 */

strtotime('12/25/2014');
strtotime('25-12-2014');