HOW TO: Increase productivity with some simple scripts using PHP include, require, include_once, and require_once – electro kami
Step-by-Step PHP Tutorials for Beginners - Creating your PHP Program FROM SCRATCH: Basic Authentication, Membership and CRUD Functionalities - CodeProject
A Sneak Peek into The $_SERVER in PHP
How to edit the default index.PHP file in WordPress - Quora
How to create a simple math CAPTCHA form using PHP ? - GeeksforGeeks
PHP String Exercise: Get the filename component of the specified path - w3resource
sample-php/index.php at main · digitalocean/sample-php · GitHub