How to install PHP server-side scripting language on Windows




PHP, which stands for "PHP: Hypertext Preprocessor" is a widely-used Open Source general-purpose scripting language that is especially suited for Web development. Its syntax draws upon C, Java, and Perl, and is easy to learn. The main goal of the language is to allow web developers to write dynamically generated web pages quickly, but you can do much more with PHP.

Why install PHP version 4 when PHP 5 is available

You may want to install an older version of PHP as many web hosting companies still use PHP version 4. To avoid any incompatibility issues between your PHP code on a development box and production box of your web hosting, use an older version of PHP is recommended.

Steps to install PHP on Windows as development machine Step 1: Download PHP Windows Binaries

1. Go to http://www.php.net/downloads.php

2. Move to the end of the download page where PHP 4 (e.g. 4.4.8 zip package) is listed.

3. Go to Windows Binaries section. Click the link to open the mirror page.



4. Then choose a mirror site to download the zip package to your computer.

Step 2: Verify the installer you just downloaded.

Every PHP download comes with a MD5 hash value. This hash value is a Checksum value that can be used to verify data and file integrity. Screenshot below shows the PHP I downloaded was verified by freeware HashCalc.

File downloaded: php-4.4.8-Win32.zip
MD5 hash provided by Apache.org: 09ffff4b1a54bbadb8fee6acd85a2c1f

Verified PHP download by HashCalc

Step 3: Set up PHP directory

1. Unzip the PHP package.

To unzip, you can use open source file archiver 7-Zip.

2. Create a new directory C:\php

3. Copy all files and directories from the unzipped package to C:\php. See screenshot below.

   PHP installation directory on C drive
   

4. Copy php4ts.dll from C:\php and paste it to the following directory.

   For Windows 2000/XP, C:\WINNT\system32

   Or

   For Window 95/98/Me, C:\Windows\system

5. Copy php.ini-dist from C:\php and paste it to either C:\WINNT or C:\Windows and then rename it to php.ini. It should end up like this:

   For Windows 2000/XP, C:\WINNT\php.ini

   Or

   For Window 95/98/Me, C:\Windows\php.ini

Step 4: Configure php.ini file

Open php.ini in your text editor and modify the values (if the value is different to the new value) listed in table below.

Because we are building a development and debugging environment, most of the default values in php.ini should be OK to use. Depending on your needs, you may want to change the following options:

Purpose	Old value	New value
Always display errors	display_errors = Off	display_errors = On
Turn on debugging on startup errors	display_startup_errors = Off	display_startup_errors = On
Create temporary directory for HTTP uploaded files such as uploaded photos	;upload_tmp_dir =	C:\PHP\uploadtemp
Turn on GD support if you want PHP to generate graphics on the fly. For example, use GD for photo uploading script. To use GD support, remember to copy and paste php_gd2.dll to system directory: For Windows 2000/XP, C:\WINNT\system32 Or For Window 95/98/Me, C:\Windows\system	;extension=php_gd2.dll	extension=php_gd2.dll
Correct the extension directory in which the loadable extensions (modules) reside.	extension_dir = "./" Or extension_dir = "./extensions"	extension_dir = "C:/php/extensions"
Create a folder (here we use C:\PHP\tmp) where session data are stored. When you call session_start() in PHP, it will create a session file in this folder. You can open the session file to examine values in it.	;session.save_path = /tmp	session.save_path ="C:\PHP\tmp"

Note:

For PHP mail function related configuration in PHP.ini, refer to the guide how to use PHP and Microsoft SMTP Server to send emails.

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