$GLOBALS 添加超全局变量

<?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();

?>


结果:

$foo in global scope: Example content

$foo in current scope: local variable

$GLOBAL["变量名"];