Workaround for global variables globally invalidation after PHP multiple include, global variable global_php tutorial

A workaround that causes global variables globally to fail after multiple include in PHP, global variables

This example describes a workaround that causes global variables to fail after multiple include in PHP. Share to everyone for your reference. The specific analysis is as follows:

In multiple files, the file is followed by an include, but the function in the last file cannot refer to the global variable after using global. For example:
a.php file:

<?PHP$AA = 1;? >

b.php file:

<?phpinclude a.phpfunction 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 use a variable as a global variable for multiple files, then using the $globals array is always valid. For example, the a.php in the above example:

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

This variable can then be referenced in the functions and methods of multiple files.

I hope this article is helpful to everyone's PHP programming.

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