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WordPress 出現 Fatal error: Maximum execution time of 30 seconds exceeded 是因為主機對程式的執行時間作了限制，解決方法如下 :

// 擇一使用即可，依不可行性排序

01. 自己的主機 or 虛擬主機且可以修改 php.ini

a. 修改 php.ini 裡 max_execution_time 的數值，重新啟動 Server
b. .htaccess 加上 php_value max_input_time 300
c. wp-config.php 加上 set_time_limit( 300 );

02. 虛擬主機 : 不可以修改 php.ini

a. .htaccess 加上 php_value max_execution_time 300
b. wp-config.php 加上 set_time_limit( 300 );

// 如果主機有安裝 suPHP
.htaccess file 的 php_value max_execution_time 300 改成 max_execution_time = 300

Ref :
01. PHP Runtime Configuration
02. PHP set_time_limit ( int $seconds )

01. 如果要存檔成 UTF-8, 千萬別跟自己過不去, 去使用 Windows 內建的記事本, 請使用 PSPad, NotePad++, EmEditor, UltraEdit 或其它好一點的文字編輯器。因為使用 Windows 內建的記事本, 以UTF-8存檔時, 會自動添加 BOM 標籤, 而造成一些問題, 如 Warning: Cannot modify header information - headers already sent by...。

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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

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