With PHP 5, the extension that allows PHP to work with a MySQL 

database server is not installed or enabled by default by the Windows 

installer. You must install and enable it manually. 

To install PHP 5 on a Windows system:

1.

If applicable, log into your Windows system using the Administrator 

account.

2.

Download the Windows PHP 5.x installer from the PHP website at 

www.php.net/downloads.php

.

3.

Double click the installer file you downloaded and follow the onscreen 

installation instructions.

4.

After PHP is successfully installed, download the Windows PHP 5.x zip 

package from the PHP website at 

www.php.net/downloads.php

, and 

then extract the package in a temporary folder on your hard disk.

The zip package contains the extension you need to work with 

MySQL.

5.

In the temporary folder containing the unzipped files, locate the folder 

called ext and copy it to the C:\PHP\ folder.

The ext folder contains common PHP extensions, including the 

MySQL extension.

6.

In the C:\Windows folder, locate the file called php.ini and open it in 

Notepad.

You must edit this file to enable the MySQL extension.

7.

Find the following line in the php.ini file:

extension_dir = "./"

This line specifies where PHP looks for extensions.

8.

Edit the line as follows:

extension_dir = "C:\PHP\ext\"

TIP

Don't omit the final 

9.

Find the following line in the php.ini file:

slash.

;extension=php_mysql.dll

The semicolon (;) at the start of the line tells PHP to ignore the line.

10.

Delete the semicolon at the start of the line to enable the extension.

extension=php_mysql.dll

11.

Save and close the php.ini file.

Configuring your system (PHP) 305