Undefined variables

rvidanar

I receive a error when use

if ($xvariable) {}

and $xvariable is not defined before.

Can I use this or not?

Way?

What I need to config in php.ini

Many programs like claroline use this sentences.

Help please

m3rajk

if your looking for whether it was set then use issset.

but when you use a variable you're using it, you're doing a boolean check. this means that it has to be true (normally 1 with false being 0)

without seeing more of the code i can't really help because i don't know what's going on. what i can tell from that is that you're trying to boolean and declare at the same time, which seems to be the only thing php wont let one do

rvidanar

the code is this

<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
</head>

The messaje of error in the browser is this

Notice: Undefined variable: alreadyVisited in c:\inetpub\wwwroot\hola.php on line 9

m3rajk

you never look for the cariable.
try checking the get array $_GET['alreadyVisited']

rvidanar

I need install Claroline system, for elearning and the system have many cases of same type.

Do you know if I can config php to permit this ?

tbach2

the "Notice" error is not really an error, just a warning. It can be turned off in your php config file or in an .htaccess file or even in the script.

take a look at the error_reporting() function.

Or, in .htaccess, I think the usage is php_value error_reporting 7