Calendar - 1st and 3rd Friday of Month

Hey All, im currently working on a project and I am using PHP Calendar which is a great script by the way. Ive modified bits and pieces to do what I need it to but im not sure how I would implement the following:

A class is held every 1st and 3rd Friday of every month, instead of doing it manually every month I would like to find a solution to have it automatically create those classes on the calendar.

Does anyone know of a way to do such a thing?

 

<?php

$search = 0;

for ($i = 1; $i < 31; $i++)
{
	$day = mktime(0, 0, 0, date('n'), $i);
	
	if (date('N', $day) == 5 AND in_array(++$search, array(1, 3)))
	{
		echo 'The '. date('dS M', $day) ." is a friday.<br />\n";
	}
}

?>

PHP:

Gets the first and third friday of the current month.


EDIT:

You can also make a function of this.

function get_fridays_of($month = false, $year = false, $fridays = array(1, 3))
{
	if (!$month)
	{
		$month = date('n');
	}
	if (!$year)
	{
		$year = date('Y');
	}
	
	$search = 0;
	$matches = array();
	
	for ($i = 1; $i < 31; $i++)
	{
		$day = mktime(0, 0, 0, $month, $i, $year);
		
		if (date('N', $day) == 5 AND in_array(++$search, $fridays))
		{
			$matches[] = $i;
		}
	}
	
	return $matches;
}

PHP:

And get the fridays of a specific month/year.

Example:

$fridays = get_fridays_of(4, 2003); // Gets the first and third friday of april 2003

PHP: