what does php mean

$GLOBALS in PHP is a built-in super global variable that can be used to access all global variables defined in the current script, including accessing global variables defined by other functions, modifying global variables defined by other functions, and in-line It is used for accessing global variables in external scopes in a set of functions.

$GLOBALS

$GLOBALS in PHP is A built-in superglobal variable in PHP that is used to access all global variables defined in the current script.

Purpose

The main purpose of $GLOBALS is:

• Access global variables defined by other functions
• Modify global variables defined by other functions
• Access global variables in external scopes in nested functions

Syntax

To access global variables, use the following syntax:

<code class="php">$GLOBALS['variable_name']</code>

Example

The following example demonstrates how to use $GLOBALS to access global variables defined by other functions :

<code class="php"><?php
$global_variable = 10;

function test() {
  global $global_variable;
  echo $global_variable; // 输出 10
}

test();
?></code>

Note

• Try to avoid using $GLOBALS as it will make the code difficult to read and maintain. The key name (variable name) of
• $GLOBALS is in string form.
• $GLOBALS can be overridden, which may lead to unexpected results.

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