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# Servers-Apache 2.0

This section contains notes and hints specific to Apache 2.0 installs of `PHP`, both for Unix and Windows versions.

Warnung
Do not use Apache 2.0 and `PHP` in a production environment neither on Unix nor on Windows.

You are highly encouraged to take a look at the Apache Documentation to get a basic understanding of the Apache 2.0 Server.

## PHP and Apache 2.0 compatibility notes

The following versions of PHP are known to work with the most recent version of Apache 2.0:

- PHP 4.3.0 or later available at http://www.php.net/downloads.php.
- the latest stable development version. Get the source code http://snaps.php.net/php4-latest.tar.gz or download binaries for Windows http://snaps.php.net/win32/php4-win32-latest.zip.
- a prerelease version downloadable from http://qa.php.net/.
- you have always the option to obtain `PHP` through anonymous CVS.

These versions of `PHP` are compatible to Apache 2.0.40 and later.

> Anmerkung: Apache 2.0 `SAPI`-support started with PHP 4.2.0. PHP 4.2.3 works with Apache 2.0.39, don't use any other version of Apache with PHP 4.2.3. However, the recommended setup is to use PHP 4.3.0 or later with the most recent version of Apache2.

> All mentioned versions of `PHP` will work still with Apache 1.3.x.

## PHP and Apache 2 on Linux

Download the most recent version of Apache 2.0 and a fitting PHP version from the above mentioned places. This quick guide covers only the basics to get started with Apache 2.0 and `PHP`. For more information read the Apache Documentation. The version numbers have been omitted here, to ensure the instructions are not incorrect. You will need to replace the 'NN' here with the correct values from your files.

Beispiel 3-5. Installation Instructions (Apache 2 Shared Module Version)
    1.  gzip -d httpd-2_0_NN.tar.gz
    2.  tar xvf httpd-2_0_NN.tar
    3.  gunzip php-NN.tar.gz
    4.  tar -xvf php-NN.tar
    5.  cd httpd-2_0_NN
    6.  ./configure --enable-so
    7.  make
    8.  make install

        Now you have Apache 2.0.NN available under /usr/local/apache2,
        configured with loadable module support and the standard MPM prefork.
        To test the installation use your normal procedure for starting
        the Apache server, e.g.:
        /usr/local/apache2/bin/apachectl start
        and stop the server to go on with the configuration for PHP:
        /usr/local/apache2/bin/apachectl stop.

    9.  cd ../php-NN

    10. Now, configure your PHP.  This is where you customize your PHP
        with various options, like which extensions will be enabled.  Do a
        ./configure --help for a list of available options.  In our example
        we'll do a simple configure with Apache 2 and MySQL support.  Your
        path to apxs may differ, in fact, the binary may even be named apxs2 on
        your system.

          ./configure --with-apxs2=/usr/local/apache2/bin/apxs --with-mysql

    11. make
    12. make install

        If you decide to change your configure options after installation,
        you only need to repeat the last three steps. You only need to
        restart apache for the new module to take effect. A recompile of
        Apache is not needed.

        Note that unless told otherwise, 'make install' will also install PEAR,
        various PHP tools such as phpize, install the PHP CLI, and more.

    13. Setup your php.ini

        cp php.ini-dist /usr/local/lib/php.ini

        You may edit your .ini file to set PHP options.  If you prefer having
        php.ini in another location, use --with-config-file-path=/some/path in
        step 10.

        If you instead choose php.ini-recommended, be certain to read the list
        of changes within, as they affect how PHP behaves.

    14. Edit your httpd.conf to load the PHP module.  The path on the right hand
        side of the LoadModule statement must point to the path of the PHP
        module on your system.  The make install from above may have already
        added this for you, but be sure to check.

        For PHP 4:

          LoadModule php4_module libexec/libphp4.so

        For PHP 5:

          LoadModule php5_module libexec/libphp5.so

    15. Tell Apache to parse certain extensions as PHP.  For example,
        let's have Apache parse the .php extension as PHP.  You could
        have any extension(s) parse as PHP by simply adding more, with
        each separated by a space.  We'll add .phtml to demonstrate.

          AddType application/x-httpd-php .php .phtml

        It's also common to setup the .phps extension to show highlighted PHP
        source, this can be done with:

          AddType application/x-httpd-php-source .phps

    16. Use your normal procedure for starting the Apache server, e.g.:

          /usr/local/apache2/bin/apachectl start

Following the steps above you will have a running Apache 2.0 with support for `PHP` as `SAPI` module. Of course there are many more configuration options available for both, Apache and `PHP`. For more information use ./configure --help in the corresponding source tree. In case you wish to build a multithreaded version of Apache 2.0 you must overwrite the standard MPM-Module `prefork` either with `worker` or `perchild`. To do so append to your configure line in step 6 above either the option `--with-mpm=worker` or `--with-mpm=perchild`. Take care about the consequences and understand what you are doing. For more information read the Apache documentation about the MPM-Modules.

> Anmerkung: To build a multithreaded version of Apache your system must support threads. This also implies to build `PHP` with experimental Zend Thread Safety (ZTS). Therefore not all extensions might be available. The recommended setup is to build Apache with the standard `prefork` MPM-Module.

## PHP and Apache 2.0 on Windows

Consider to read the Windows specific notes for Apache 2.0.

Warnung
Apache 2.0 is designed to run on Windows NT 4.0, Windows 2000 or Windows XP. At this time, support for Windows 9x is incomplete. Apache 2.0 is not expected to work on those platforms at this time.

Download the most recent version of Apache 2.0 and a fitting PHP version from the above mentioned places. Follow the Manual Installation Steps and come back to go on with the integration of `PHP` and Apache.

There are two ways to set up `PHP` to work with Apache 2.0 on Windows. One is to use the CGI binary the other is to use the Apache module DLL. In either case you need to stop the Apache server, and edit your `httpd.conf` to configure Apache to work with `PHP`.

You need to insert these three lines to your Apache `httpd.conf` configuration file to set up the CGI binary:

Beispiel 3-6. PHP and Apache 2.0 as CGI
    ScriptAlias /php/ "c:/php/"
    AddType application/x-httpd-php .php
    Action application/x-httpd-php "/php/php.exe"

If you would like to use `PHP` as a module in Apache 2.0, be sure to move `php4ts.dll` for PHP 4, or `php5ts.dll` for PHP 5, to `winnt/system32` (for Windows NT/2000) or `windows/system32` (for Windows XP), overwriting any older file. You need to insert these two lines to your Apache `httpd.conf` configuration file to set up the PHP-Module for Apache 2.0:

Beispiel 3-7. PHP and Apache 2.0 as Module
    ; For PHP 4 do something like this:
    LoadModule php4_module "c:/php/sapi/php4apache2.dll"
    AddType application/x-httpd-php .php

    ; For PHP 5 do something like this:
    LoadModule php5_module "c:/php/sapi/php5apache2.dll"
    AddType application/x-httpd-php .php

> Anmerkung: Remember to substitute the `c:/php/` for your actual path to `PHP` in the above examples. Take care to use either `php4apache2.dll` or `php5apache2.dll` in your LoadModule directive and not `php4apache.dll` or `php5apache.dll` as the latter ones are designed to run with Apache 1.3.x.

Warnung
Don't mix up your installation with dll files from different PHP versions . You have the only choice to use the dll's and extensions that ship with your downloaded PHP version.

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