PHPの設定がデフォルトのままの場合、日付関係の関数（date()とか）を使うとwarningを出してきます ↓エラー文
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 'Asia/Tokyo' for 'JST/9.0/no DST' instead in /xxx.php on line xxx
これをなくすにはphp.iniでデフォルトのtimezoneを設定すればOKです
- php.iniを開く
sudo vi /etc/php.ini
- [Date]の部分を探し、次のように修正する
[Date] ; Defines the de...... ; http://www.php...... date.timezone = Asia/Tokyo
- apacheの再起動
sudo /etc/init.d/httpd restart