PHP implements the static and global modifier for variables in terms of references. For example, a true global variable imported inside a function scope with the global statement actually creates a …

Jul 11, 2025 · Global variables refer to any variable that is defined outside of the function. Global variables can be accessed from any part of the script i.e. inside and outside of the function.

An associative array containing references to all variables which are currently defined in the global scope of the script. The variable names are the keys of the array.

In PHP, any variable that can be accessed from anywhere in a PHP script is called as a global variable. If the variable is declared outside all the functions or classes in the script, it becomes a global …

PHP $GLOBALS The $GLOBALS superglobal is an array that contains references to all global variables of the script. PHP superglobals are built-in variables that are ...

Apr 16, 2025 · PHP global keyword tutorial shows how to use global variables in PHP. Learn variable scope with practical examples.

Aug 11, 2025 · A classic example is the “register_globals” vulnerability (now deprecated in modern PHP) where user-supplied data from `$_GET` or `$_POST` could overwrite global variables, leading to …

The "global" keyword is used in PHP to access a variable declared outside the current function or class. In this article, we will explore the syntax and usage