PHP is a server-side, HTML-embedded scripting language that may be used to create dynamic Web pages. It is available for most operating systems and Web servers, and can access most common databases, including MySQL. PHP may be run as a separate program or compiled as a module for use with the Apache Web server.
PHP actually provides two different MySQL API extensions:
• Mysql: Available for PHP versions 4 and 5, this extension is intended for use with MySQL versions prior to MySQL 4.1. This extension
does not support the improved authentication protocol used in MySQL 4.1, nor does it support prepared statements or multiple
statements. If you wish to use this extension with MySQL 4.1, you will likely want to configure the MySQL server to use the -
-old-passwords option (see Client does not support authentication protocol). This extension is documented
on the PHP Web site at http://php.net/mysql.
• Chapter 2, MySQL Improved Extension (Mysqli) - Stands for “MySQL, Improved”; this extension is available only in PHP 5. It is
intended for use with MySQL 4.1.1 and later. This extension fully supports the authentication protocol used in MySQL 5.0, as well
as the Prepared Statements and Multiple Statements APIs. In addition, this extension provides an advanced, object-oriented programming
interface.
You can read the documentation for the mysqli extension at http://php.net/mysqli. Helpful article can be found at http://devzone.zend.com/node/view/id/686 and http://devzone.zend.com/node/view/id/687.
If you're experiencing problems with enabling both the mysql and the mysqli extension when building PHP on Linux yourself,
Chapter 7, Enabling Both mysql and mysqli in PHP.
The PHP distribution and documentation are available from the PHP Web site.
Portions of this section are Copyright (c) 1997-2008 the PHP Documentation Group This material may be distributed only subject to
the terms and conditions set forth in the Creative Commons Attribution 3.0 License or later. A copy of the Creative Commons Attribution 3.0 license is distributed with this manual. The latest version is presently available at This material may be distributed only subject to the terms and conditio\ ns set forth in the Open Publication License, v1.0.8 or later (the latest version is presently available at http://www.opencontent.org/openpub/).
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