Knowing how to properly use strings is extremely important, as is this tutorial. From concatenating strings to magic quotes, this tutorial covers the basics of string use.
PEAR is a code repository for PHP extensions and PHP library code inspired by TeX's CTAN and Perl's CPAN. PEAR contains code for common tasks such as database abstraction and error control.
A repository of PHP related frequently asked questions. People submit questions and others answer, all duties are very open and public to all. In short, this is an open PHP Knowledge Base.
