$GLOBALS
(PHP 4, PHP 5, PHP 7)
$GLOBALS — References all variables available in global scope
Description
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.
Examples
Example #1 $GLOBALS example
<?php
function?test()?{
????$foo?=?"local?variable";
????echo?'$foo?in?global?scope:?'?.?$GLOBALS["foo"]?.?"\n";
????echo?'$foo?in?current?scope:?'?.?$foo?.?"\n";
}
$foo?=?"Example?content";
test();
?>The above example will output something similar to:
$foo in global scope: Example content
$foo in current scope: local variableNotes
Note: This is a 'superglobal', or automatic global, variable. This simply means that it is available in all scopes throughout a script. There is no need to do global $variable; to access it within functions or methods.
Note: Variable availability Unlike all of the other superglobals, $GLOBALS has essentially always been available in PHP.
← Superglobals
$_SERVER →
? 1997–2017 The PHP Documentation GroupLicensed under the Creative Commons Attribution License v3.0 or later.
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