Accurate time using PHP

<?php
    function ezDate($d) {
        $ts = time() - strtotime(str_replace("-","/",$d));
       
        if($ts>31536000) $val = round($ts/31536000,0).' year';
        else if($ts>2419200) $val = round($ts/2419200,0).' month';
        else if($ts>604800) $val = round($ts/604800,0).' week';
        else if($ts>86400) $val = round($ts/86400,0).' day';
        else if($ts>3600) $val = round($ts/3600,0).' hour';
        else if($ts>60) $val = round($ts/60,0).' minute';
        else $val = $ts.' second';
       
        if($val>1) $val .= 's';
        return $val;
    } ?>

Then I use it as follows;


<?php
    echo ucwords(ezDate('2006-09-07 18:42:00')).' Ago'; ?>

Which would output;

2 Months Ago