isset - empty - checked - unchecked +++

[phplearner]

Sorry, I couldn't think of a better Subject title.

I'm stuck trying to get the following to work correctly, and maybe I'm mixing apples & oranges somewhere?

A text explanation follows the code:

<?php 
ob_start(); 
session_start();
error_reporting(2039); // Temporary fix 
$submit = $_POST['submit']; 
$taxrate = $_POST['taxrate'];
$notaxrate = $_POST['notaxrate'];
//    $domain = $_SERVER['SERVER_NAME']; 
    $self = $_SERVER['PHP_SELF']; 
    if (isset($submit)) {
	    if (($taxrate == 'info') && ($notaxrate == 'unchecked')){
             echo 'Please select a tax area'; // error msg1
           } elseif (($taxrate != 'info') && ($notaxrate == 'checked')) {
	         echo 'Please choose from only one set of options'; // error msg2
		   } elseif (($taxrate != 'info') && ($notaxrate == 'unchecked')) {
		     $salestax == $taxrate; 
		   } elseif (($taxrate != 'info') && ($notaxrate == 'checked')) {
		     $salestax == $notaxrate;
           } // END error check, $salestax assignment & move one
        header('Location: nextfile.php'); // go to nextfile IF no errors
    } // END isset($submit)		
?> 
<FORM METHOD="POST" ACTION="<?=$self?>"> 
MY STATE (USA) CUSTOMERS ONLY:<br>
Please Choose SHIP-TO DESTINATION Area<br>
And Then Click The PROCEED Button Below<br>
<SELECT NAME="taxrate" size="1">
<OPTION VALUE="info" SELECTED>--Select SHIP-TO Destination--</OPTION>
<OPTION VALUE=".0825">My Own County</OPTION>
<OPTION VALUE=".0725">All OTHER State Counties</OPTION>
<input type="hidden" name="taxcalc" value="taxrate">
</SELECT>
<br><br>
NON-STATE CUSTOMERS:<br> 
Please Check This Box And Then PROCEED<br>
<input name="notaxrate" type="checkbox" value=".00">NON STATE CUSTOMER<br>
<br>
<INPUT name="submit" type="submit" value="PROCEED">
&nbsp;&nbsp;&nbsp; 
<INPUT name="reset" type="reset" value="Reset Form"> 
</FORM> 
<?php 
ob_end_flush(); 
?> 

Here's how it is supposed to work:

Upon Submit:

1. If user does NOT choose a list option and does NOT check the checkbox: error msg1

2. If user does choose a list option AND checks the checkbox; error msg2

3. If user does choose a list option AND does NOT check the checkbox;

$salestax=$salestax (the value of the list option selected)

4. If user does NOT choose a list option AND checks the checkbox;

$salestax=$notaxrate (the value of the checkbox option). This must be passed as

'.00' for further processing.

5. Final step: go to nextpage.php

Thank you for any help ... I'm getting blue in the face from trying this and that but not seeing it work correctly.

[majiclab]

One thing I will point out is that $notaxrate will never be 'checked' or 'unchecked'. If the user checks it off, then $notaxrate == '.00'. If they don't check it off, then !isset($notaxrate).

Basically, the value of the checkbox is passed when it's checked. If it's not checked, it is not passed at all.

I would think that revising your code to take that in consideration might solve some of your problems.

example:

if (!isset($_POST[ 'notaxrate' ])) {
    // they didn't check it
} else {
    // they checked it
}

Hope that helps!

-Percy

[phplearner]

Hey Percy:

Thank you so much for the info. I revised things and at least have the first two error messages working correctly.

But I can't get the rest to work to the next page (except checking only the checkbox does go to newfile.php however it won't echo the salestax value) on:

<?php
// nextfile.php
$salestax = $_POST['salestax'];
echo "Sales Tax: "."$salestax";
?>

Here is the revised section of the first file:

    if (isset($submit)) {
       if (($taxrate == "info") && (!isset($_POST['notaxrate']))) {
	      echo "Please select a tax area.";
	   } elseif (($taxrate != "info") && (isset($_POST['notaxrate']))) {
	      echo 'Please choose from only one set of options'; 
	   } elseif (($taxrate != "info") && (!isset($_POST['notaxrate']))) {
		  $salestax == $taxrate; // this should go to nextfile.php but doesn't
	   } elseif (($taxrate != "info") && (isset($_POST['notaxrate'])))  {
		  $salestax == $notaxrate; // this goes to nextfile.php but will not echo the $salestax value
	   } else {	  

	   header('Location: nextfile.php'); // go to nextfile IF no errors
	   }
    } // END isset($submit)

Thanks again for your assistance.

[phplearner]

OK... thanks to your help I now have all the error/list-checkbox behaviors working fine including the last two (revised):

	   } elseif (($taxrate != "info") && (!isset($_POST['notaxrate']))) {
		 $salestax = $taxrate;
		 header('Location: nextfile.php'); // go to nextfile IF no error
	   } elseif (($taxrate == "info") && (isset($_POST['notaxrate'])))  {
		  $salestax = $notaxrate;
         header('Location: nextfile.php'); // go to nextfile IF no error
	   } 
    } // END isset($submit)

But I still can't echo the darn $salestax amount on the next page.

ARRRGGGHHHHH :mad:

[majiclab]

POST and GET variables won't be passed along to the next page when you do a header('Location:') redirect.

You would have to manually pass it as a GET:

    header("Location: nexturl.php?salestax=$salestax");

OR include the file rather than redirecting it. If you include it, then it will have access to all the of the variables.

    require('newturl.php');

If you do use the first method, note that your POST should be changed to GET in the next file.

Hope that helps.

-Percy

[phplearner]

Hey Percy:

Tnx for the info...but still questions.

RE:

header("Location: nexturl.php?salestax=$salestax");

1. Would that be just a $_GET or $HTTP_GET_VARS in the nexturl file?

2. What if I had to pass TWO $variables?

3. In any event, will my 'hidden' files from the previous page using session_start() still also be carried on to nexturl.php?

RE:

require('newturl.php');

Hmmm...interesting. But if I do this, won't the existing page Form stuff still show on the page as well? That wouldn't work well.

Thanks much.

[phplearner]

(magiclab-Percy):

RE:

header("Location: nexturl.php?salestax=$salestax");

I used:

echo "Sales Tax: ".$HTTP_GET_VARS['salestax'];

THIS ALL WORKS NOW...YOU ARE A GENIUS, MAN!!!

THANK YOU, THANK YOU, THANK YOU. Sooooo many frustrating hours spent on this...posts on 3 different forums and YOU are the ONLY ONE to solve the problem!!!

I am extremely GRATEFUL :p :p :p

Thank you again!!!!!!!!!!!!!!!!!!!!!!