What is the usage of $GLOBALS in php

The usage of $GLOBALS in php is to reference all variables available in the global scope, such as [$GLOBALS["foo"]]. $GLOBALS is a global combined array containing all variables.

The operating environment of this article: windows10 system, php 7.3, thinkpad t480 computer.

$GLOBALS is used to reference all variables available in the global scope. It is a global combined array containing all variables. The name of the variable is the key of the array.

Example:

The output of the above routine is similar to:

$foo in global scope: Example content $foo in current scope: local variable

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