PHP function to convert a timestamp in the past to a human readable, rounded time frame. For example "2 years ago" or "1 minute ago" or even "Just Now" if in past X number of seconds.

time_ago.php

<?php
function time_ago($pastTime)
{
	$datetime1=new DateTime("now");
	$datetime2=date_create($pastTime);
	$diff=date_diff($datetime1, $datetime2);
	$timemsg='';
	if($diff->y > 0){
	  $timemsg = $diff->y .' year'. ($diff->y > 1?"'s":'');
	}
	else if($diff->m > 0){
	  $timemsg = $diff->m . ' month'. ($diff->m > 1?"s":'') .' ago';
	}
	else if($diff->d > 0){
	  $timemsg = $diff->d .' day'. ($diff->d > 1?"s":'') .' ago';
	}
	else if($diff->h > 0){
	  $timemsg = $diff->h .' hour'.($diff->h > 1 ? "s":'') .' ago';
	}
	else if($diff->i > 0){
	  $timemsg = $diff->i .' minute'. ($diff->i > 1?"s":'') .' ago';
	}
	else if($diff->s > 20){
	  $timemsg = $diff->s .' second'. ($diff->s > 1?"s":'') .' ago';
	}
	else if($diff->s >= 0){
	  $timemsg = 'Just now';
	}
	
	return $timemsg;
}