'X' Time Ago PHP Function.
Description: A php function that returns date as 20 seconds ago, 1 minutes ago, etc
Author: Arul Prasad J
Version : 1.01
Email: arulprasadj@outlook.com
github: https://github.com/arulprasadj
Copyright: Copyright (c) 2015 ArulPrasadJ.com
Note: This script is free; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.This script is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.