mktime() [function.mktime]: It is not safe to rely on the systems timezone settings问题解决

部署php代码时遇到问题如下：

Strict Standards: date_default_timezone_get() [function.date-default-timezone-get]: It is not safe to rely on the system's timezone settings. Please use the date.timezone setting, the TZ environment variable 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 'UTC' for '8.0/no DST' instead in C:\AppServ\www\nipin\configs\config.php on line 25
Strict Standards: mktime() [function.mktime]: It is not safe to rely on the system's timezone settings. Please use the date.timezone setting, the TZ environment variable 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 'UTC' for '8.0/no DST' instead in C:\AppServ\www\nipin\configs\config.php on line 25
Strict Standards: mktime() [function.mktime]: You should be using the time() function instead in C:\AppServ\www\nipin\configs\config.php on line 25

原因是php取得格林威治时间和北京的时间相差8个小时，应该取北京的时间。

原来上面报错，主要体现在一句话上：

$getime = date_default_timezone_get()=='UTC' ? mktime()+28800 : mktime();

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解决方法有二：

1，是直接增加这句话取代上面这句，date_default_timezone_set("PRC");直接设置为背景时间。

2，在php.ini文件里，设置：;date.timezone = Asia/Shanghai 或者 date.timezone=PRC

以上就介绍了mktime() [function.mktime]: It is not safe to rely on the systems timezone settings问题解决，包括了方面的内容，希望对PHP教程有兴趣的朋友有所帮助。