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Warning: strtotime() [function.strtotime]: 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 'Europe/Helsinki' for 'EEST/3.0/DST' instead in /Path_to_your/www/wp-includes/functions.php on line 35

Warning: date() [function.date]: 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 'Europe/Helsinki' for 'EEST/3.0/DST' instead in /Path_to_your/www/wp-includes/functions.php on line 43

Warning: strtotime() [function.strtotime]: 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 'Europe/Helsinki' for 'EEST/3.0/DST' instead in /Path_to_your/www/wp-includes/functions.php on line 35

Warning: date() [function.date]: 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 'Europe/Helsinki' for 'EEST/3.0/DST' instead in /Path_to_your/www/wp-includes/functions.php on line 43

00. 大多看到這問題發生在您用的是 PHP 5.3.0 或使用套裝軟體搭配的 PHP 版本是 5.3.0。

01. 下面為解決的方法, 則一使用即可, 依推薦使用的順序排序。

  1. 修改 ./wp-config.php, 加上

date_default_timezone_set('Asia/Taipei');

  2. 修改 ./wp-includes/functions.php

    a. 在第一個 function 前面加上

date_default_timezone_set('UTC+8');

    b. 在第一個 function 前面加上

date_default_timezone_set('Asia/Taipei');

  3. 修改 php.ini, 加上

date.timezone = "Asia/Taipei"

02. 上面的 Asia/Taipei 均可以替換成下面任一城市, 其它城市請到 PHP timezones 尋找

日本 : Asia/Tokyo
台北 : Asia/Taipei
重慶 : Asia/Chongqing
漢城 : Asia/Seoul
上海 : Asia/Shanghai
新加坡 : Asia/Singapore
澳門 : Asia/Macao 或 Asia/Macau
香港 : Asia/Hong_Kong 或 Asia/Chungking

03. 上面所提到的套裝軟體為 AppServ, PHPnow, XAMPP, WampServer, APMServ, EasyPHP。

Ref:
01. WordPress Support
02. PHP date_default_timezone_set

Tags: APMServ, Appserv, date_default_timezone_set, EasyPHP, PHP, php.ini, PHPnow, timezone, WampServer, WordPress, XAMPP