(PHP 5 >= 5.3.0, PHP 7, PHP 8)
timezone_version_get — Gets the version of the timezonedb
This function has no parameters.
Returns a string in the format
YYYY.increment, such as 2022.2.
If you have a timezone database version that is old (for example, it doesn't show the current year), then you can update the timezone information by either upgrading your PHP version, or installing the » timezonedb PECL package.
Some Linux distributions patch PHP's date/time support to use an
alternative source for timezone information. In which case this function
will return 0.system. You are encouraged to install the
» timezonedb PECL
package in that case as well.
Example #1 Getting the timezonedb version
<?php
echo timezone_version_get();
?>The above example will output something similar to:
2022.2
If the output of timezone_version_get() is "0.system", the documentation encourages to install the timezonedb PECL package. However, consider leaving it as is, because "0.system"indicates the operating system's tzdata database is being used, which is actually desirable, since the tzdata package gets updated by the operating system's package manager.