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php

--TEST--
Test date_sub() function : basic functionality 
--CREDITS--
Felix De Vliegher <felix.devliegher@gmail.com>
--SKIPIF--
<?php if (!function_exists('date_sub')) echo "skip: date_sub() function not found!"; ?>
--FILE--
<?php
date_default_timezone_set('UTC');
/* Prototype  : void date_sub(DateTime object, DateInterval interval)
 * Description: Subtracts an interval from the current date in object.
 * Source code: ext/date/php_date.c
 * Alias to functions: 
 */

echo "*** Testing date_sub() : basic functionality ***\n";

// Initialise all required variables
$startDate = '2008-01-01 12:25';
$format = 'Y-m-d H:i:s';
$intervals = array(
	'P3Y6M4DT12H30M5S',
	'P0D',
	'P2DT1M',
	'P1Y2MT23H43M150S'
);

$d = new DateTime($startDate);
var_dump( $d->format($format) );

foreach($intervals as $interval) {
	date_sub($d, new DateInterval($interval) );
	var_dump( $d->format($format) );
}

?>
===DONE===
--EXPECTF--
*** Testing date_sub() : basic functionality ***
string(19) "2008-01-01 12:25:00"
string(19) "2004-06-26 23:54:55"
string(19) "2004-06-26 23:54:55"
string(19) "2004-06-24 23:53:55"
string(19) "2003-04-24 00:08:25"
===DONE===