PHP 关于strtotime(" x month") bug的解决
PHP 关于strtotime("- x month") bug的解决
strtotime('-x month'); 在涉及到月份修改的时候，可能不会得到预料的结果。
此为php的一个bug：
https://bugs.php.net/bug.php?id=27793
?
如：当前时间为： 2011-08-31 17:21:22
date_default_timezone_set('Asia/Shanghai');
$t = time();
print_r(array(
??? ??? ??? date('Y年m月',$t),
??? ??? ??? date('Y年m月',strtotime('- 1 month',$t)),
??? ??? ??? date('Y年m月',strtotime('- 2 month',$t)),
));
?>
上面代码输出：
Array
(
??? [0] => 2011年08月
??? [1] => 2011年07月
??? [2] => 2011年07月
)
而预期的结果是：
Array
(
??? [0] => 2011年08月
??? [1] => 2011年07月
??? [2] => 2011年06月
)
?
============================================
?
可以用如下方法解决：
date_default_timezone_set('Asia/Shanghai');
$first_day_of_month = date('Y-m',time()) . '-01 00:00:01';
$t = strtotime($first_day_of_month);
print_r(array(
??? ??? ??? date('Y年m月',$t),
??? ??? ??? date('Y年m月',strtotime('- 1 month',$t)),
??? ??? ??? date('Y年m月',strtotime('- 2 month',$t)),
));
?>
输出：
Array
(
??? [0] => 2011年08月
??? [1] => 2011年07月
??? [2] => 2011年06月
)
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