Server variables

[THE_BIG_CHEESE]

When I do this:

IF (isset($HTTP_SERVER_VARS['STEP'])) {
	$Stepnum = "0";
	IF ($HTTP_SERVER_VARS['STEP'] = "1") {
		$Stepnum == "1"; }
	ELSEIF ($HTTP_SERVER_VARS['STEP'] = "2") {
		$Stepnum == "2"; }
	ELSEIF ($HTTP_SERVER_VARS['STEP'] = "3") {
		$Stepnum == "3"; }
	ELSEIF ($HTTP_SERVER_VARS['STEP'] = "4") {
		$Stepnum == "4"; }
}
ELSE
{
$Stepnum = "0";
$Stepnum == "0";
}

How come the variable $stepnum never changes from 0?
It always stays at zero and never changes to 1,2,3 or 4?

Thanks a lot!!!

[edwardsbc]

Well, there are a couple of things wrong here. First, you can't set SERVER variables. They are provided by the server and php can't change them. You probably want $GET[] or $PUT[].

Second, you seem to be confused about the comparsion operator and the set operator.

Use == to compare
Use = to set

if $a is 'No',
($a=='Yes') is false

($a='Yes') is true and $a is now 'Yes'

[THE_BIG_CHEESE]

thanks a lot!!!

[THE_BIG_CHEESE]

IF (isset($GET['STEP'])) {
$whatstep = $GET['STEP'];
IF ($whatstep == "1") {
$Stepnum = "1"; }
ELSEIF ($whatstep == "2") {
$Stepnum = "2"; }
ELSEIF ($whatstep == "3") {
$Stepnum = "3"; }
ELSEIF ($whatstep == "4") {
$Stepnum = "4"; }
}
ELSE
{
$Stepnum = "0";
}

Should this work? Cause it doesn't.

Thanks again

[THE_BIG_CHEESE]

Nevermind

I got it

[philipolson]

How about:

if (array_key_exists('STEP', $_GET)) {
    $stepnum = $_GET['STEP'];
} else {
    $stepnum = 0;
}

You may want to use $REQUEST instead of $GET if you don't care if STEP comes from GET or POST (or COOKIE or FILES). I love $_REQUEST :-)