simple problem - windows?

[adunphy]

I have a simple form and on the next page I get errors when trying to use the variables

Notice: Undefined variable: user in d:\html... on line 2

for example if the form has an input box - test and I call $test from the next page using a post form it errors. Any ideas? This works fine on unix /linux.

Its php4.

amy

[Weedpacket]

You should always check that a variable exists before using its value, using [man]isset[/man] or [man]empty[/man]. If it doesn't exist you can either skip that bit of code, or create the variable with some default value, depending on which is appropriate.

if(isset($foo))
{ // do stuff with $foo
}

if(!isset($foo))
  $foo = 0;
//do stuff with $foo

[adunphy]

the variable DOES exist...that's the problem.

[rehfeld]

Originally posted by adunphy
the variable DOES exist...that's the problem.

no it doesnt. maybe it existed at some part of the script, but that doesnt mean it exists for example, inside of a function or class etc....

read this
http://www.php.net/manual/en/language.variables.scope.php

and this too
http://us2.php.net/manual/en/security.globals.php

if that doesnt help, post your code.

[adunphy]

this is the code

on the first page it has
<input type=text name=test id=test value="test">

on the php page it has
print $test;

and it fails.

[rehfeld]

read about register globals

i posted a link for you but you obviously didnt want to bother to read it.

echo $GET['test'];
or $POST['test'];

[adunphy]

apparently it will only work with ''s around the variable name.

$_GET['var']

very different from any other php I have worked with.

Thanks for your help.

[Shrike]

Rehfeld told you what the issue was. Quoting array indexes is a very different issue to register_globals. Without quotes the index name is considered a constant, and if there is no defined constant you will get a relevant warning.