实测在class的function中include的文件中非php的global全局环境
author:一佰互联 2019-04-29   click:188
测试代码1.php
复制代码 代码如下:
<?php
$g1 = "g1";
class c{
function fun() {
include("2.php");
echo "-----in class fun---";
global $g1;
var_dump("$g1 => ", $g1
,"$g2 => ", $g2
,"$gg2 => ", $gg2
);
echo "--------";
}
}
c::fun();
echo "--- in 1.php ----";
var_dump("$g1 => ", $g1
,"$g2 => ", $g2
,"$gg2 => ", $gg2);
echo "--- ----";

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

结果
复制代码 代码如下:
--- 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.