PHP 4

The book I read to research this post was Teach Yourself PHP 4 in 24 Hours by Matt Zandstra which is a very good book which I bought from amazon. PHP started out as a language which connected databases to websites but now has evolved into a full web language. It tends to be used in conjunction with apache server & mysql although will work with most operating systems & databases. PHP, apache & mysql are all open source which basically means they are free. You can write PHP with a simple text editor like notepad which is included with windows. PHP is always enclosed in HTML brackets. One of the things it works with is boolean logic & with that some of the notation may seem a bit strange to the untrained eye ie equals is depicted by 2 equals signs.