A PHP session variable is used to store information about, or change settings for a user session. Session variables hold information about one single user, and are available to all pages in one application.

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An array can store one or more values in a single variable name.

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The real power of PHP comes from its functions.

In PHP - there are more than 700 built-in functions available.

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Looping statements in PHP are used to execute the same block of code a specified number of times.

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Variables are used for storing values, such as numbers, strings or function results, so that they can be used many times in a script.

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You cannot view the PHP source code by selecting “View source” in the browser - you will only see the output from the PHP file, which is plain HTML. This is because the scripts are executed on the server before the result is sent back to the browser.

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What do You Need?

This tutorial will not explain how to install PHP, MySQL, or Apache Server.

If your server supports PHP - you don’t need to do anything! You do not need to compile anything or install any extra tools - just create some .php files in your web directory - and the server will parse them for you. Most web hosts offer PHP support.
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A PHP file may contain text, HTML tags and scripts. Scripts in a PHP file are executed on the server.

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The PHP development team would like to announce the immediate availability of PHP 5.2.4. This release focuses on improving the stability of the PHP 5.2.X branch with over 120 various bug fixes in addition to resolving several low priority security bugs. All users of PHP are encouraged to upgrade to this release.
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According to recent survey, over 20% of MySQL users plan to migrate a Microsoft Access applications to MySQL over the next 12 months. However there are few documents available that describe best practices for performing such a migration.

This document summarizes discussion from the “MS Access Migration” session at the 2007 MySQL User Group meeting in California. That session brought together a number of MySQL users with a goal of identifying key success factors for moving MS Access applications to MySQL.
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