What's the problem ?

[hamidnazary]

Source:
<?
echo "$str";
?>

Url:
index.php?str=hello

Output:
Notice: Undefined variable: str in c:\inetpub\wwwroot\index.php on line 2

😕 🙁 😕

[ir4z0r]

echo $_GET['str'];

[zingbats]

I would do:

<? echo ("$str");?> JUST to be on the safe side

[ir4z0r]

why do people always use quotes around variables?
any prog. language would fail 🙁

so please get rid of these "
in associative arrays use ' around the name

imo the cleanest version

<?PHP
echo $_GET['str'];
?>

[BuzzLY]

That's not the whole problem. It's not an error, it's a notice. Proper programming would demand that you declare the variable before you try to use it, by setting $str = "$_GET['str'] in this case.

The fact that "hello" was not echoed on to the screen is because register_globals = OFF (which is a good thing). The solution there is to use $_GET['str'] as was suggested. However, you will STILL get the Notice, because $str is never defined in the page. To prevent this, you need to disable notices.

Edit php.ini. Find the line that looks something like this:

error_reporting = E_ALL

Change it to this:

error_reporting = E_ALL & ~E_NOTICE

That will disable notices from that point forward.