<?php
if(!function_exists('cal_days_in_month')) {
function cal_days_in_month($calendar, $month, $year) {
return $month == 2 ? ($year % 4 ? 28 : ($year % 100 ? 29 : ($year % 400 ? 28 : 29))) : (($month - 1) % 7 % 2 ? 30 : 31);
}
if (!defined('CAL_GREGORIAN')) {
define('CAL_GREGORIAN', 1);
}
}
//tests
echo "----- Basic Tests ----\n";
var_dump(cal_days_in_month(CAL_GREGORIAN, 1, 2014)); //31
var_dump(cal_days_in_month(CAL_GREGORIAN, 2, 2014)); //28
var_dump(cal_days_in_month(CAL_GREGORIAN, 10, 2014)); //31
var_dump(cal_days_in_month(CAL_GREGORIAN, 11, 2014)); //30
echo "\n----- Leap Years ----\n";
//some leap years - expect 29 for all
var_dump(cal_days_in_month(CAL_GREGORIAN, 2, 1804));
var_dump(cal_days_in_month(CAL_GREGORIAN, 2, 2000));
var_dump(cal_days_in_month(CAL_GREGORIAN, 2, 2056));
var_dump(cal_days_in_month(CAL_GREGORIAN, 2, 1994));
echo "\n----- Invalid tests ----\n";
//some invalid ones:
var_dump(cal_days_in_month(CAL_GREGORIAN, 1, 1));
var_dump(cal_days_in_month(CAL_GREGORIAN, 14, 2014)); //might be feb 2015?
var_dump(cal_days_in_month(CAL_GREGORIAN, 1, 2014000)); //the far far future?
var_dump(cal_days_in_month(CAL_GREGORIAN, 0, 2014)); //do we handle zero?
var_dump(cal_days_in_month(CAL_GREGORIAN, -1, 2014)); //how about negative?
var_dump(cal_days_in_month(CAL_GREGORIAN, 1, 0)); //and years?
var_dump(cal_days_in_month(CAL_GREGORIAN, 1, -1)); //negative years?
preferences:
39.17 ms | 402 KiB | 5 Q