A solution to global variables globally failure after multiple include PHP _php tips

The example of this article describes the solution to the global variable globally failure with PHP multiple include. Share to everyone for your reference. The specific analysis is as follows:

In multiple files, files are one-by-one include, but the function in the last file cannot reference global variables after using global. For example:
a.php file:

<?php
$aa = 1;
? >

b.php file:

<?php
include a.php
function Show () {
global $aa;
Var_dump ($AA);
>

Display: null;

This failure is caused by a variety of reasons. An effective way is if you decide to treat a variable as a global variable for multiple files, then using the $globals array is always valid. For example, the a.php in the previous example:

<?php
$GLOBALS [' AA '] = 1;
? >

You can then refer to the variable in multiple file functions and methods.

I hope this article will help you with your PHP program design.