Good news! PHP 8.3 is being actively supported through 31 Dec 2025. After that point, it's advisable to upgrade to the latest version, since the PHP team will only offer security-related support until 31 Dec 2027, at which point PHP 8.3 will be considered "end-of-life".
php -v
. This should display the installed PHP version.phpinfo.php
in your web server's document root with the following content:
<?php phpinfo(); ?>