Variables undefined !

[safety007]

When a form is submitted with a submit button , e.g.:

<FORM ACTION="service.php" METHOD="POST">
<INPUT TYPE="TEXT" NAME="item">
<INPUT TYPE="SUBMIT" NAME="subm" VALUE="yes">
<INPUT TYPE="SUBMIT" NAME="subm" VALUE="no">
</FORM>

the variables $item, $subm in service.php should have been automatically
filled with some values, haven't they?, so I could do like this:

echo "You entered: ".$item;

echo " and clicked: ".$subm;

... however by my side IT ISN'T SO, all the variables are UNDEFINED which
product "parse error: undefined variable item.....". Why?

I know, it's possible to use $item = $_POST['item'] ... but not for all INPUT elements, e.g. checkbox.

Any idea to resolve this problem?

[thorpe]

you need to use the $_POST array. this is because register_globals is now off by default (has been for a long time) and should remain that way for security reasons.

one option would be to use [man]extract[/man]. eg;

extract($_POST);

[kellog]

safety007 wrote:

I know, it's possible to use $item = $_POST['item'] ... but not for all INPUT elements, e.g. checkbox.

All of them are available through $_POST. But since it's a checkbox, like:

<input type="checkbox" name="CheckBox">

you have to test if it was checked. If it was checked, itwill be true, so:

echo "You entered: $item<br>";
if ($_POST["CheckBox"])
    {
         echo "CheckBox was selected";
    }
else
    {
        echo "CheckBox was not selected";
    }

it's been a while since I've done this, but I think if you give the checkbox a value you can echo it:

<input type="checkbox" name="CheckBox" value="abcd">
echo $_POST["CheckBox"];

should output "abcd"

[batman]

As they said above use the $POST['variable']; solution to set your vars.

$item = $_POST['item'];
$subm = $_POST['subm'];

ALSO CHANGE:
echo "You entered: ".$item;

echo " and clicked: ".$subm;
TO:

echo "You entered: $item";

echo " and clicked: $subm";

Also, what the use of:
<INPUT TYPE="SUBMIT" NAME="subm" VALUE="yes">
<INPUT TYPE="SUBMIT" NAME="subm" VALUE="no">
????
wouldnt you want no to be a reset button? But then again you could later check to see if they hit no for some odd reason.... 😃

[safety007]

kellog wrote:

if you give the checkbox a value you can echo it:

<input type="checkbox" name="CheckBox" value="abcd">
echo $_POST["CheckBox"];

should output "abcd"

Yes but if you given't the checkbox a value, then you can't echo it, because
$POST["CheckBox"] will cause "Undefined Index CheckBox" error and that what's going on, the unchecked checkbox will not set the $POST array.

[thorpe]

and as kellog said, you need to check to see if its been selected.

[safety007]

Thanks people I see now, this is the right code for checkbox:

if (isset($_POST['NameOfCheckBox'])):
echo "Chechbox was checked";
else:
echo "Chechbox wasn't checked";
endif;