time_since

function time_since($original){
	$chunks=array(array(60*60*24*365,' year'),array(60*60*24*30,' month'),array(60*60*24*7,' week'),array(60* 60*24,' day'),array(60*60,'hr'),array(60,' min'));
	$today=time();
	$since=$today-$original;
 
	for($i=0,$j=count($chunks);$i<$j;$i++){
		$seconds=$chunks[$i][0];
		$name=$chunks[$i][1];
 
		if(($count=floor($since/$seconds))!=0)break;
	}
	$print=($count==1)?'1'.$name:"$count{$name}s";
	if($i+1<$j){
		$seconds2=$chunks[$i+1][0];
		$name2=$chunks[$i+1][1];
	}
	return $print;
}