在class的function中include的文件中,非php的global全局环境

测试代码1.php ?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 = ',

测试代码1.php

<?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";

代码2.php

<?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";

结果

--- 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"

--- ----

由此可见,

在class中include后,被include文件变量域已经变成func中了,非全局.

但是可以通过global提升.

一般被include文件在编写时,可能会由于没有注意到被include的情况,就觉得有点郁闷了.