Find out loaded loaded PHP modules and its compiled in features

You are running PHP and want to find out which modules are actually loaded and/or which features inside the modules can be used.

You can use the command line and simply type:

php -i

There is also a dedicated function in PHP called phpinfo() which shows this as an HTML page. Create a file with the extension .php and insert these lines of code:

<?php
phpinfo();
?>

You can now view this page with a browser through Apache.

Note: if you want to add PHP modules you only have to install them and restart Apache with rcapache restart. PHP will automatically load the new modules.