Creating Function help?

[jmaccs64]

Can someone please help me simplify this and turn it into a function? Can i then store functions in an .inc file and reference it as needed? How would i do that? Thanks!!!!

//This will find current week
	$today = date("YmdHis");
	$week_array = array(20060819230300, 20060819231400, 20060924100000);
	if ($today<$week_array[0])
	{$week = "1";}
	elseif ($today<$week_array[1])
	{$week = "2";}
	elseif ($today<$week_array[2])
	{$week = "3";}
	else {$week= "0";}

[Shrike]

You can get the week of the year using PHPs built in date function.

$week = date( 'W' );

I can't really see what the above code is actually meant to achieve. The $week_array indices are limited to 2006, and two of them are on the same day. What is it supposed to do?