To adjust the PHP settings, go to **Service Plans** \> select a plan \> **PHP Settings** tab. On this tab you can do the following:
- Define the PHP version (**PHP version**) and handler type to use (**run PHP as**). This setting is only available on the service plan level.
- Configure a range of predefined PHP settings. These settings are mostly performance and security-related, but some of them may affect the website functionality. Click the
icon next to an option to learn more about it.
- Configure any PHP settings by placing them in the **Additional directives** section. Use the same syntax as you use for `php.ini`. For example, if you want to automatically load the `mSQL` extension, add the line: `extension=msql.so`.
icon next to an option to learn more about it.
- Configure any PHP settings by placing them in the **Additional directives** section. Use the same syntax as you use for `php.ini`. For example, if you want to automatically load the `mSQL` extension, add the line: `extension=msql.so`.
Note
Administrator can set additional PHP directives to a particular subscription. In this case, the subscription does not get the *Locked* status. Therefore, the added directives and other changes in PHP settings can be lost when the subscription is synchronized with the service plan.