<?php
$g1 = 'g1';
class c{
function fun() {
include('2.php');
echo "/n-----in class fun---/n";
global $g1;
var_dump("/$g1 => ", $g1
,'$g2 => ', $g2
,'$gg2 => ', $gg2
);
echo "/n--------/n";
}
}
c::fun();
echo "/n--- in 1.php ----/n";
var_dump('$g1 => ', $g1
,'$g2 => ', $g2
,'$gg2 => ', $gg2);
echo "/n--- ----/n";

<?php
$g2 = 'g2';
global $gg2;//本环境下并非全局,需要提升
$gg2 = 'gg2';
function g2fun() {
global $g1, $g2, $gg2;
echo "/n--- in g2fun ----/n";
var_dump('$g1 => ', $g1, '$g2 => ', $g2
, '$gg2 => ', $gg2);
echo "/n--- ----/n";
}
g2fun();
echo "/n--- in 2.php ----/n";
var_dump('$g1 => ', $g1, '$g2 => ', $g2
, '$gg2 => ', $gg2
);
echo "/n--- ----/n";
global $g1;
echo "/n--- in 2.php global----/n";
var_dump('$g1 => ', $g1, '$g2 => ', $g2
, '$gg2 => ', $gg2
);
echo "/n--- ----/n";

--- in g2fun ----
string(7) "$g1 => "
string(2) "g1"
string(7) "$g2 => "
NULL
string(8) "$gg2 => "
string(3) "gg2"
--- ----
--- in 2.php ----
string(7) "$g1 => "
NULL
string(7) "$g2 => "
string(2) "g2"
string(8) "$gg2 => "
string(3) "gg2"
--- ----
--- in 2.php global----
string(7) "$g1 => "
string(2) "g1"
string(7) "$g2 => "
string(2) "g2"
string(8) "$gg2 => "
string(3) "gg2"
--- ----
-----in class fun---
string(7) "$g1 => "
string(2) "g1"
string(7) "$g2 => "
string(2) "g2"
string(8) "$gg2 => "
string(3) "gg2"
--------
--- in 1.php ----
string(7) "$g1 => "
string(2) "g1"
string(7) "$g2 => "
NULL
string(8) "$gg2 => "
string(3) "gg2"
--- ----