This question already has an answer here:
Does anyone know where I can read the documentation for the solution to this warning. I can search for the warning and I just get a phonebook worth of pages that have the same problem.
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.
$config['today'] = date('Y-m-d');
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it is because you do not have default time zone set in php.ini. Add this line at the beginning of your PHP.
date_default_timezone_set('America/Los_Angeles');
p.s. of course, change to your time zone.
You need to set the default timezone for PHP in either the php.ini file or in your programs entry point file.
See more information at http://php.net/manual/en/function.date.php, http://www.php.net/manual/en/function.date-default-timezone-set.php and http://www.php.net/manual/en/datetime.configuration.php#ini.date.timezone.
The method, as mentioned by Nathan, can be fixed by setting the timezone, as mentioned at:
http://www.php.net/manual/en/function.date-default-timezone-set.php
The warning, identical to your post, is mentioned on this page at:
http://www.php.net/manual/en/function.date-default-timezone-set.php#73174
Thanks for this post, I was wonder why my PHP timezone always set to GMT +0, and not following my machine timezone, this is the reason.
I just run a test,date_default_timezone_set() only affected date(), but not time()