错误信息注意：php中包含函数的未定义变量[关闭]

Question

I have too separate PHP files:

1. add-new-module.php
2. _add-new-module.php

I' am using the function require_once _add-new-module.php in the add-new-module.php at the very top of the page. I have initialized the variable $msg into _add-new-module.php for some reason its still showing up error message as:

Notice: Undefined variable: msg in xxxxxxxxxxx/add-new-module.php on line 2

When echoing the variable $msg in _add-new-module.php it WORKS but when I try to echo the variable $msg in add-new-module.php it gives me above error. When I used islet on the variable $msg well it hides error message but doesn't show anything on the page.

I have also replaced include with include_once, require_once and require. Still no luck. I have also used global $msg hides the error message but doesn't seems to display the result.

Answer 1

You can use global $msg; in add-new-module.php, just write it before echo $msg;

 global $msg;
 echo $msg; 

if not working To Enable Global Variables Register_globals In PHP APACHE Server Php.ini

register_globals = On

if you want to turn it on within your page you can put this code at the begining of your code:

ini_set('register_globals', true);

otherwise enable register_globals via .htaccess:

1. Create an .htaccess in your virtual host's root directory

2. put the following code in it:

   //Override PHP settings. The first IfModule is //for Apache 1.3, the second for Apache 2.

    <IfModule mod_php4.c>
        php_value register_globals 1
    </IfModule>
   
    <IfModule sapi_apache2.c>
        php_value register_globals 1
    </IfModule>
   
      php_flag register_globals 1