Here is a pre build php function free for you to use in your own sites, this will check the string you run though it and check that its a vailid email address.

A wide selection of great PHP tutorials with code examples. All comments are commented to make it easier to read and understand.

This tutorials is about making your own Shoutbox, without download other free trial version ones, plus try this tutorial make your own shoutbox and feel free to add your website name. Enjoy!

If you use a form on your site then you'll know that user input can often have white space before or after the text as the person filling in the form field sometimes accidentally adds spaces. This handy function will remove the whitespace from the beginning or end of the string.

A new method of text based captcha to verify human input in forms. Much more accessible to screen readers and very easy for humans to decipher (as opposed to some image based CAPTCHAs).

If you need the data of an array displayed in 2 columns. Can be easily modified for more than 2.

This article describes how to structure a PHP application. Detailing directory structure, code flow and key files to include.

The Google Adsense administration section gives you some superficial stats. Want more detail? You gotta track hits yourself. This tutorial will teach you how to track the ads that have been clicked; the pages they were clicked on; and which visitors have been doing the clicking!

A function to get the coordinates of an address using Google Geocodes. A tutorial to demonstrate how to write a function that will get the coordinates of an address (mainly used to plot on Google Maps API).

PEAR's HTML_CSS is a CSS Generator which can be used in combination with HTML_Page. This tutorial teaches you how to use HTML_CSS.