PI: daydiff

Purpose is to produce difference between two dates

<?_wxt daydiff firstday="" lastday=""?>

The parameters are:

firstday (optional) A date in the form: yyyy-mm-dd. If the year-part is set to xxxx, the date is considered a repeating date, repeated each year.
lastday (optional) A date in the form: yyyy-mm-dd. If the year-part is set to xxxx, the date is considered a repeating date, repeated each year.
absolute (optional) The PI will allways return a positive integer, absolute value.

If one of the day-attributes is unspesified, the date is set to the date of building. At least one of the day-attributes must be set.

A few examples:

<?_wxt daydiff firstday="xxxx-12-24"?>
<?_wxt daydiff lastday="xxxx-12-24"?>

will in trurn produce the days since christmas and the days until christmas.