Seconds since midnight to date

gistfile1.aw

<?php

/**
 * Seconds since midnight to date
 *
 * @param string $date
 * @param int $seconds
 *
 * @return string
 */
function secondsSinceMidnightToDate($date, $seconds)
{
    return date('c', strtotime($date) + $seconds);
}

var_dump(secondsSinceMidnightToDate('2011-12-19', 80580));

Output:

string(25) "2011-12-19T22:23:00+01:00"