Show how many minutes and hours ago WordPress post was published

While developing a custom site I was in a need to represent how many minutes/hours/days the post was published ago instead of the published date.

The logic of the code is simple:

Code snippet:

function Bing_filter_time() {
    global $post ;
    $to = time();
    $from = get_the_time('U') ;
    $diff = (int) abs($to - $from);
    if ($diff <= 3600) {
        $mins = round($diff / 60);
        if ($mins <= 1) {
            $mins = 1;
        }
        $time = sprintf ( _n ( '%s minutes' , '%s minutes' , $mins ) , $mins ) . __ ( 'Front' , 'Bing' ) ;
    } else if (($diff <= 86400) && ($diff > 3600)) {
        $hours = round($diff / 3600);
        if ($hours <= 1) {
            $hours = 1;
        }
        $time = sprintf ( _n ( '%s hours' , '%s hours' , $hours ) , $hours ) . __ ( 'Front' , 'Bing' ) ;
    } elseif ($diff >= 86400) {
        $days = round($diff / 86400);
        if ($days <= 1) {
            $days = 1;
            $time = sprintf ( _n ( '%s days' , '%s days' , $days ) , $days ) . __ ( 'Front' , 'Bing' ) ;
        } elseif ($days > 29) {
            $time = get_the_time(get_option('date_format'));
        } else {
            $time = sprintf ( _n ( '%s days' , '%s days' , $days ) , $days ) . __ ( 'Front' , 'Bing' ) ;
        }
    }
    return $time;
}
add_filter('the_time','Bing_filter_time');