Installation on Windows 95/98/NT systems

This install guide will help you install and configure PHP on your Windows 9x/NT webservers. This guide was compiled by Bob Silva. The latest revision can be found at

This guide provides installation support for:

Configuration Changes for PHP

All modules are now prefixed with 'php3_'. You will need to change your php3.ini file and/or any scripts loading extensions with the dl() function (or you could always remove the 'php3_' prefix). This will prevent confusion between php modules and their supporting libraries.

The ChangeLog, FAQ and updated documentation can always be found at the offical PHP website or any of its mirrors.

General Installation Steps

The following steps should be performed on all installations before the server specific instructions.

Windows 95/98/NT and PWS/IIS 3

The recommended method for configuring these servers is to use the INF file included with the distribution (php_iis_reg.inf). You may want to edit this file and make sure the extensions and PHP install directories match your configuration. Or you can follow the steps below to do it manually.

WARNING: These steps involve working directly with the windows registry. One error here can leave your system in an unstable state. We highly recommend that you back up your registry first. The PHP Development team will not be held responsible if you damage your registry.

PWS and IIS 3 users now have a fully operational system. IIS 3 users can use a nifty tool from Steven Genusa to configure their script maps.

Windows NT and IIS 4

To install PHP on an NT Server running IIS 4, follow these instructions:

Windows 9x/NT and Apache 1.3.x

You must edit your srm.conf or httpd.conf to configure Apache to work with the PHP CGI binary.

Although there can be a few variations of configuring PHP under Apache, this one is simple enough to be used by the newcomer. Please consult the Apache Docs for further configuration directives.

To use the source code highlighting feature, simply create a PHP script file and stick this code in: <?php show_source ("original_php_script.php3"); ?>. Substitute original_php_script.php3 with the name of the file you wish to show the source of. (this is only one way of doing it). Note: On Win-Apache all back slashes in a path statement such as: "c:\directory\file.ext", must be converted to forward slashes.

Omni HTTPd 2.0b1 for Windows

This has got to be the easiest config there is:

Step 1: Install Omni server
Step 2: Right click on the blue OmniHTTPd icon in the system tray and select Properties
Step 3: Click on Web Server Global Settings
Step 4: On the 'External' tab, enter: virtual = .php3 | actual = c:\path-to-php-dir\php.exe
Step 5: On the Mime tab, enter: virtual = wwwserver/stdcgi | actual = .php3
Step 6: Click OK

Repeat steps 2 - 6 for each extension you want to associate with PHP.

PHP Modules

Table 2-1. PHP Modules

php3_calendar.dllCalendar conversion functions
php3_crypt.dllCrypt functions
php3_dbase.dllDBase functions
php3_dbm.dllGDBM emulation via Berkely DB2 library
php3_filepro.dllREAD ONLY access to filepro databases
php3_gd.dllGD Library functions for gif manipulation
php3_hyperwave.dllHyperWave functions
php3_imap4r2.dllIMAP 4 functions
php3_ldap.dllLDAP functions
php3_msql1.dllmSQL 1 client
php3_msql2.dllmSQL 2 client
php3_mssql.dllMSSQL client (requires MSSQL DB-Libraries
php3_mysql.dllMySQL functions
php3_nsmail.dllNetscape mail functions
php3_oci73.dllOracle functions
php3_snmp.dllSNMP get and walk functions (NT only!)
php3_zlib.dllZLib functions