Função "time ago"

time_ago.php

<?php
//http://codeforgeek.com/2014/10/time-ago-implementation-php/
function get_timeago( $ptime )
{
    $estimate_time = time() - $ptime;

    if( $estimate_time < 1 )
    {
        return 'less than 1 second ago';
    }

    $condition = array( 
                12 * 30 * 24 * 60 * 60  =>  'year',
                30 * 24 * 60 * 60       =>  'month',
                24 * 60 * 60            =>  'day',
                60 * 60                 =>  'hour',
                60                      =>  'minute',
                1                       =>  'second'
    );

    foreach( $condition as $secs => $str )
    {
        $d = $estimate_time / $secs;

        if( $d >= 1 )
        {
            $r = round( $d );
            return 'about ' . $r . ' ' . $str . ( $r > 1 ? 's' : '' ) . ' ago';
        }
    }
}
?>