아래 코드의 결과를 확인해 보세요...

<?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(); 

?>

결과:

$foo in global scope: Example content

$foo in current scope: local variable