time ago function php

function timeago($date) {
		   $timestamp = strtotime($date);

		   $strTime = array("second", "minute", "hour", "day", "month", "year");
		   $length = array("60","60","24","30","12","10");

		   $currentTime = time();
		   if($currentTime >= $timestamp) {
				$diff     = time()- $timestamp;
				for($i = 0; $diff >= $length[$i] && $i < count($length)-1; $i++) {
				$diff = $diff / $length[$i];
				}

				$diff = round($diff);
				return $diff . " " . $strTime[$i] . "(s) ago ";
		   }
		}