Return the weekday of 13th January, 2014 in PHP

Description

The following code shows how to return the weekday of 13th January, 2014.

Example

  /* ww w  .  ja v  a2  s .  co  m*/
<?php
    $jd=gregoriantojd(1,13,2014);
    echo jddayofweek($jd,1);
?>

The code above generates the following result.