Why is it Risky to Use System Timezone Settings with PHP's `date()` Function?

"Warning: It's Risky to Trust System Timezone Settings for PHP's 'date()' Function

In PHP versions after 5.3.21, a warning surfaces when relying on the system's default timezone settings for the date() function. This error highlights the potential dangers of relying on the system's timezone, which can vary depending on the server environment.

To remedy this issue, PHP requires you to explicitly define the desired timezone using either the date.timezone configuration option in the php.ini file or the date_default_timezone_set() function in your code.

To establish the timezone using php.ini, locate or create a Date section and add the following line:

date.timezone = Continent/Region

Replace Continent/Region with the appropriate timezone identifier from the supported list. For example, for Eastern Time in the United States, you would use America/New_York.

Alternatively, use date_default_timezone_set() to set the timezone programmatically. At the beginning of your script, simply include the following line:

date_default_timezone_set('America/New_York');

After making these changes, restart the HTTP service (e.g., service httpd restart) to apply them. By defining the timezone explicitly, you ensure that dates and times are handled consistently and accurately in your PHP applications.

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