<?php
function timeBetween($start,$end,$after=' ago',$color=1){
//both times must be in seconds
$time = $end - $start;
if($time <= 60){
    if($color==1){
      return '<span style="color:#009900;">Online';
    }else{
      return 'Online';
    }
}
if(60 < $time && $time <= 3600){
    return round($time/60,0).' minutes'.$after;
}
if(3600 < $time && $time <= 86400){
    return round($time/3600,0).' hours'.$after;
}
if(86400 < $time && $time <= 604800){
    return round($time/86400,0).' days'.$after;
}
if(604800 < $time && $time <= 2592000){
    return round($time/604800,0).' weeks'.$after;
}
if(2592000 < $time && $time <= 29030400){
    return round($time/2592000,0).' months'.$after;
}
if($time > 29030400){
    return 'More than a year'.$after;
}
}
echo timeBetween($timedatabase,time());
?>