PHP Mktime错误

Question

我突然在我已经完成的网站上收到以下错误，到目前为止工作正常：

A PHP Error was encountered

Severity: Warning

Message: mktime() [function.mktime]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Antarctica/Macquarie' for 'EST/10.0/no DST' instead

这是有问题的代码：

$stamp=mktime(0,0,0,$month,$day,$year);

这里有什么问题？如何快速消除这些错误？我在很多地方使用mktime格式，并且在每个地方都会出错。

Answer 1

如错误所示，您需要在代码中使用date_default_timezone_set('Antarctica/Macquarie');或ini_set('date.timezone', 'Antarctica/Macquarie');指定时区，或在date.timezone中定义php.ini。

Answer 2

您能否确认$month，$day和$year是INT - 甚至不是NULL？

同时查看date_default_timezone_set()