<?php
function unix_timestamp_to_human ($timestamp = "", $format = 'd.m.Y - H:i:s')
{
    if (empty($timestamp) || ! is_numeric($timestamp)) $timestamp = time();
    return ($timestamp) ? date($format, $timestamp) : date($format, $timestamp);
}

$unix_time = "1329938085";

echo unix_timestamp_to_human($unix_time); //Return: 22.02.2012 - 19:14:45
?>