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

Error:

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' for now, but please set date.timezone to select your timezone. in /srv/www/htdocs/cacti/lib/functions.php on line 482

Resolution:

PHP Version: php-5.4.16-36.el7_1.x86_64
Its a Problem with PHP version5.3 and above. We need to Define timezone in /etc/php.ini

1. Edit /etc/php.ini
vi /etc/php.ini

2. Uncomment "date.timezone" line.

[root@example log]# grep -i timezone /etc/php.ini
; Defines the default timezone used by the date functions
; http://php.net/date.timezone
date.timezone = 'Europe/Prague'
[root@example log]#

3. Put your timezone Entry  ('Europe/Prague' in this case)and save it.
4. Then restart Web server service.
service httpd restart