--TEST--
Test Bug #49081 (DateTime::diff() mistake if start in January and interval > 28 days)
--SKIPIF--
<?php if (!function_exists('date_diff')) echo 'skip: date_diff() function not found!'; ?>
--INI--
date.timezone=GMT
--FILE--
<?php

function calc($end_date, $start_date, $expected) {
	$start = new DateTime($start_date);
	$end = new DateTime($end_date);
	$interval = $start->diff($end);
	$actual = $interval->format('P%R%yY%mM%dD%hH%iM%sS');
	echo "$end_date - $start_date = $actual";
	if ($actual != $expected) {
		// Yeah, this is gratuitous, but it helps clarify
		// what's going on in the test and the diff.
		echo " (expected: $expected)";
	}
	echo "\n";
}


echo "March (a month with 31 days followed by a month with fewer days)...\n";
calc('2010-03-31', '2010-03-01', 'P+0Y0M30D0H0M0S');
echo "March into April...\n";
calc('2010-04-01', '2010-03-01', 'P+0Y1M0D0H0M0S');
calc('2010-04-01', '2010-03-31', 'P+0Y0M1D0H0M0S');
calc('2010-04-29', '2010-03-31', 'P+0Y0M29D0H0M0S');
calc('2010-04-30', '2010-03-31', 'P+0Y0M30D0H0M0S');
calc('2010-04-30', '2010-03-30', 'P+0Y1M0D0H0M0S');
calc('2010-04-30', '2010-03-29', 'P+0Y1M1D0H0M0S');
echo "January 2010 (a month of 31 days followed by 28 days)...\n";
calc('2010-01-29', '2010-01-01', 'P+0Y0M28D0H0M0S');
calc('2010-01-30', '2010-01-01', 'P+0Y0M29D0H0M0S');
calc('2010-01-31', '2010-01-01', 'P+0Y0M30D0H0M0S');
echo "January into February...\n";
calc('2010-02-01', '2010-01-01', 'P+0Y1M0D0H0M0S');
calc('2010-02-01', '2010-01-31', 'P+0Y0M1D0H0M0S');
calc('2010-02-27', '2010-01-31', 'P+0Y0M27D0H0M0S');
calc('2010-02-28', '2010-01-31', 'P+0Y0M28D0H0M0S');
calc('2010-02-28', '2010-01-30', 'P+0Y0M29D0H0M0S');
calc('2010-02-28', '2010-01-29', 'P+0Y0M30D0H0M0S');
calc('2010-02-28', '2010-01-28', 'P+0Y1M0D0H0M0S');
calc('2010-02-28', '2010-01-27', 'P+0Y1M1D0H0M0S');
echo "January into March...\n";
calc('2010-03-01', '2010-01-01', 'P+0Y2M0D0H0M0S');
calc('2010-03-01', '2010-01-31', 'P+0Y1M1D0H0M0S');
calc('2010-03-27', '2010-01-31', 'P+0Y1M27D0H0M0S');
calc('2010-03-28', '2010-01-31', 'P+0Y1M28D0H0M0S');
calc('2010-03-29', '2010-01-31', 'P+0Y1M29D0H0M0S');
calc('2010-03-30', '2010-01-31', 'P+0Y1M30D0H0M0S');
calc('2010-03-31', '2010-01-31', 'P+0Y2M0D0H0M0S');
calc('2010-03-31', '2010-01-30', 'P+0Y2M1D0H0M0S');
echo "January 2009 (to ensure the 2010 isn't the issue)...\n";
calc('2009-01-31', '2009-01-01', 'P+0Y0M30D0H0M0S');


?>
===DONE===
--EXPECT--
March (a month with 31 days followed by a month with fewer days)...
2010-03-31 - 2010-03-01 = P+0Y0M30D0H0M0S
March into April...
2010-04-01 - 2010-03-01 = P+0Y1M0D0H0M0S
2010-04-01 - 2010-03-31 = P+0Y0M1D0H0M0S
2010-04-29 - 2010-03-31 = P+0Y0M29D0H0M0S
2010-04-30 - 2010-03-31 = P+0Y0M30D0H0M0S
2010-04-30 - 2010-03-30 = P+0Y1M0D0H0M0S
2010-04-30 - 2010-03-29 = P+0Y1M1D0H0M0S
January 2010 (a month of 31 days followed by 28 days)...
2010-01-29 - 2010-01-01 = P+0Y0M28D0H0M0S
2010-01-30 - 2010-01-01 = P+0Y0M29D0H0M0S
2010-01-31 - 2010-01-01 = P+0Y0M30D0H0M0S
January into February...
2010-02-01 - 2010-01-01 = P+0Y1M0D0H0M0S
2010-02-01 - 2010-01-31 = P+0Y0M1D0H0M0S
2010-02-27 - 2010-01-31 = P+0Y0M27D0H0M0S
2010-02-28 - 2010-01-31 = P+0Y0M28D0H0M0S
2010-02-28 - 2010-01-30 = P+0Y0M29D0H0M0S
2010-02-28 - 2010-01-29 = P+0Y0M30D0H0M0S
2010-02-28 - 2010-01-28 = P+0Y1M0D0H0M0S
2010-02-28 - 2010-01-27 = P+0Y1M1D0H0M0S
January into March...
2010-03-01 - 2010-01-01 = P+0Y2M0D0H0M0S
2010-03-01 - 2010-01-31 = P+0Y1M1D0H0M0S
2010-03-27 - 2010-01-31 = P+0Y1M27D0H0M0S
2010-03-28 - 2010-01-31 = P+0Y1M28D0H0M0S
2010-03-29 - 2010-01-31 = P+0Y1M29D0H0M0S
2010-03-30 - 2010-01-31 = P+0Y1M30D0H0M0S
2010-03-31 - 2010-01-31 = P+0Y2M0D0H0M0S
2010-03-31 - 2010-01-30 = P+0Y2M1D0H0M0S
January 2009 (to ensure the 2010 isn't the issue)...
2009-01-31 - 2009-01-01 = P+0Y0M30D0H0M0S
===DONE===