PHP Warning: date(): It is not safe to rely on the system's timezone settings.

在排程執行cacti時,出現下列錯誤訊息

when last update time is 1424519091 (minimum one second step)
PHP Warning:  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 the timezone 'UTC' 
now, but please set date.timezone to select your 
timezone. in /usr/share/cacti/lib/functions.php on line 486

解決方式
 修正/etc/php.ini
 在data.timezone 後方加入"Asia/Taipei"

[Date]
; Defines the default timezone used by the date functions
; http://php.net/date.timezone
date.timezone = "Asia/Taipei"