Strange variable problem *SOLVED*

**lintz** · Aug 21st, 2004, 02:41 AM

I have a registration form that I've got a check to make sure the 'UserName' field is not left empty. The strange thing is on my local machine the "UserName' variable doesn't get passed through the form but if i test the registration (using exactly the same code) on my website the variable is passed through the form.

Has anyone come across this before and better yet how to overcome the problem as i don't want to make a change to the code and have to upload the file to make sure it works?

Thanks.

PHP Code:


//This is part of the form

<form method=\"post\" action=\"index.php?substr=2&act=register\">

<u>Username</u>: <input type=\"text\" name=\"uname\">

</form>

PHP Code:


//This checks for the empty field

if (empty($uname)) {



echo "<html><head></head><body bgcolor=\"dcdcdc\"><br><br>User Name not entered<br><a href=\"javascript:history.back(1)\">Back</a><br></body></html>";



exit;



}

**visualAd** · Aug 21st, 2004, 03:00 AM

This is becuase on one server you have register globals turned on and on the other you don't. Register globals automatically registers all variablees passed to the script though the GET,POST,COOKIE and SESSION as global variables.

In my opinion regsiter globals should never be on and never be used. Read about the security problems it can cause here:

http://uk.php.net/register_globals

To access your variables you need to use the following super global arrays:

$_POST = Variables passed via the post method.
$_GET = Variables passed via the GET method - i.e the query strinq
$_COOKIE = Variables passed from client side cookies.

So adding the following line to your code will bring it back to life:

PHP Code:


$uname = $_POST['uname'];



//This checks for the empty field

if (empty($uname)) {



echo "<html><head></head><body bgcolor=\"dcdcdc\"><br><br>User Name not entered<br><a href=\"java script:history.back(1)\">Back</a><br></body></html>";



exit;



}

P.s: To turn off register globals go to your PHP.ini file and change the register_globals directive to:

register_globals = Off

**lintz** · Aug 21st, 2004, 03:02 AM

Thanks visualAd - I just found the answer as well jsut as I got your reply.

Thanks again.

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