PHP indeed has a huge number of predefined variables that it provides for a script. Here’s a list!
Here you will learn about the three sets of functions that PHP has, which allow you to work with regular expressions.
W3Schools brings you a tutorial on error handling using PHP.
This web page explains the reasons for some of the most common bugs that come up in PHP programming.
This web page is about the powerful date arithmetic tools that PHP provides.
This is a list of MySQL functions for PHP from the official documentation of PHP.
7. PHP and AJAX
This web page will show you how a web page can interact with a server, while the user is typing in a query.
8. PHP and XML
This is the official documentation from the PHP website on XML Parser.
Object oriented programming concepts are important for any programmer. Here is a web page that will help you with them for working with PHP.
PHP is very similar to C, but with untyped variables and a lot more web-based programming functions.
In this you will find some of the biggest similarities as well as differences between PHP and Perl.
This example demonstrates how a web page can get information from a database using AJAX.