Paydays

output

Monday, 31.01.2011		Wednesday, 19.01.2011
Monday, 28.02.2011		Tuesday, 15.02.2011
Thursday, 31.03.2011		Tuesday, 15.03.2011
Friday, 29.04.2011		Friday, 15.04.2011
Tuesday, 31.05.2011		Wednesday, 18.05.2011
Thursday, 30.06.2011		Wednesday, 15.06.2011
Friday, 29.07.2011		Friday, 15.07.2011
Wednesday, 31.08.2011		Monday, 15.08.2011
Friday, 30.09.2011		Thursday, 15.09.2011
Monday, 31.10.2011		Wednesday, 19.10.2011
Wednesday, 30.11.2011		Tuesday, 15.11.2011
Friday, 30.12.2011		Thursday, 15.12.2011
Tuesday, 31.01.2012		Wednesday, 18.01.2012

paydays.php

<?php

date_default_timezone_set('Europe/Tallinn');


$year = 2011;
for ($month = 1; $month <= 12; ++$month) {
    list($basePayday, $bonusPayday) = getPaydays($year, $month);
    print($basePayday->format('l, d.m.Y') . "\t\t" .
          $bonusPayday->format('l, d.m.Y') . "\n");
}


function isWeekend($date) {
    $weekday = $date->format('l');
    return ($weekday == 'Sunday' || $weekday == 'Saturday');
}


function getPaydays($year, $month) {
    $date = new DateTime();

    // Compute the bonus payday.
    $date->setDate($year, $month, 15);
    if (isWeekend($date)) {
        $date->modify('next Wednesday');
    }
    $bonusPayday = clone $date;

    // Compute base salary payday.
    $date->modify('last day of this month');
    if (isWeekend($date)) {
        $date->modify('previous Friday');
    }
    $basePayday = $date;

    return array($basePayday, $bonusPayday);
}