Can't access global variable inside function

In PHP, if you want to access a global variable inside a function, you need to use the "global" keyword. For example:

Example of accessing a global variable inside a function in PHP

<div class="alert alert-info flex not-prose"> <span class="hidden md:block">Watch a video course </span> Learn object oriented PHP</div>

This will output "outside". Without the "global" keyword, the function would not be able to access the variable $x and would produce an error.