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I. Apache-specific Functions

Introduction

These functions are only available when running PHP as an Apache module.

Note: PATH_TRANSLATED server variable is no longer set implicitly under Apache 2 SAPI in contrast to the situation in Apache 1, where it is set to the same value as the SCRIPT_FILENAME server variable when it is not populated by Apache. This change was made to comply with the CGI specification. Please refer to bug #23610 for further information.

Installation

For PHP installation on Apache see the Apache section in the installation chapter.

Runtime Configuration

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.

Example 1. Turning off PHP parsing for a directory using .htaccess

php_flag engine off

Table 1. Apache configuration options

Name	Default	Changeable	Function
engine	On	PHP_INI_ALL	turns PHP parsing on or off
child_terminate	Off	PHP_INI_ALL	specify whether PHP scripts may request child process termination on end of request, see also apache_child_terminate()
last_modified	Off	PHP_INI_ALL	send PHP scripts modification date as Last-Modified: header for this request
xbithack	Off	PHP_INI_ALL	parse files with executable bit set as PHP regardless of their file ending

Here's a short explanation of the configuration directives.

engine boolean: 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.

Resource Types

This extension has no resource types defined.

Predefined Constants

This extension has no constants defined.

Table of Contents
apache_child_terminate -- Terminate apache process after this request
apache_get_modules -- Get a list of loaded Apache modules
apache_get_version -- Fetch Apache version
apache_getenv -- Get an Apache subprocess_env variable
apache_lookup_uri -- Perform a partial request for the specified URI and return all info about it
apache_note -- Get and set apache request notes
apache_request_headers -- Fetch all HTTP request headers
apache_response_headers -- Fetch all HTTP response headers
apache_setenv -- Set an Apache subprocess_env variable
ascii2ebcdic -- Translate string from ASCII to EBCDIC
ebcdic2ascii -- Translate string from EBCDIC to ASCII
getallheaders -- Fetch all HTTP request headers
virtual -- Perform an Apache sub-request

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