&reftitle.runtime;

The behaviour of the Apache PHP module is affected by settings in &php.ini;. Configuration settings from &php.ini; may be overridden by php_flag settings in the server configuration file or local &htaccess; files.

## Turning off PHP parsing for a directory using &htaccess;

    php_flag engine off

# Apache configuration options

&Name; | &Default; | &Changeable; | &Changelog;
engine | "1" | `INI_ALL` |
child_terminate | "0" | `INI_ALL` |
last_modified | "0" | `INI_ALL` |
xbithack | "0" | `INI_ALL` |

&ini.php.constants; &ini.descriptions.title;

`engine` `bool`

- Turns PHP parsing on or off. This directive is really only useful in the Apache module version of PHP. It is used by sites that would like to turn PHP parsing on and off on a per-directory or per-virtual server basis. By putting `engine off` in the appropriate places in the &httpd.conf; file, PHP can be enabled or disabled.

`child_terminate` `bool`

- Specify whether PHP scripts may request child process termination on end of request, see also `apache_child_terminate`.

`last_modified` `bool`

- Send PHP scripts modification date as Last-Modified: header for this request.

`xbithack` `bool`

- Parse files with executable bit set as PHP regardless of their file ending.