PHP: cannot declare class because the name is already in use

Question

I have 5 scripts:

1. database.php
2. parent.php
3. child1.php
4. child2.php

Answer 1

You should use require_once and include_once. Inside parent.php use

include_once 'database.php';

And inside child1.php and child2.php use

include_once 'parent.php';