Need help with check boxes, validation and sessions

[crunchie]

Hey guy, I have a form where I want to validate if the check boxes have been checked or not and store that in a session.  If a box is not selected I want an error message to echo.  With what I've done so far, if a box is selected the form works but if one is not selected my error message does not show and I get an undefined Index Notice.  Can anyone tell me where I'm going wrong.

 

Page 1- form

<form action="processPage7.php" method="post">

<br />

<p>Check the times you are most likely to have available:</p>

<input type="checkbox" name="days[]" value="Evenings" <?php if(isset($_POST['days']) == 'Evenings') echo 'checked' ?>> Weekday evenings<br />

<input type="checkbox" name="days[]" value="Weekdays" <?php if(isset($_POST['days']) == 'Weekdays') echo 'checked' ?>> Week Days<br />

<input type="checkbox" name="days[]" value="Weekends" <?php if(isset($_POST['days']) == 'Weekends') echo 'checked' ?>> Weekend Days<br />

</div><br /><br />

<p><input type="submit" value="Next Page" /></p><input type="reset" value="Reset" />

</form>

 

Page 2-

<?php

session_start();

 

if($_SERVER['REQUEST_METHOD']== 'POST'){

$valid_form = TRUE; // NO PROBLEMS

 

if(!isset($_POST['days'])){

echo "Error, no time selected. Please go back and select  a time.";

}else{

$_SESSION['days'] = $_POST['days'];

}

if($valid_form == TRUE){

header('Location: FormProcess.php');

}

}

?>

And Page 3

<?php

session_start();

 

$days = $_SESSION['days'];

 

$chkResults = $days;

for ($i = 0;$i<=count($chkResults)-1;$i++){

echo "<p>". $days[$i];

 

}

?>

Thanks in advance.

[teynon]

Which page are you getting the notice on? Also, please place your code in

[code=php:0] or [code]

blocks.

 

Your most likely issue is this:

if($_SERVER['REQUEST_METHOD']== 'POST'){
$valid_form = TRUE; // NO PROBLEMS

if(!isset($_POST['days'])){
   echo "Error, no time selected. Please go back and select  a time.";
}else{
   $_SESSION['days'] = $_POST['days'];
}
if($valid_form == TRUE){
   header('Location: FormProcess.php');
}

 

You are setting a valid_form variable to true. Then, regardless of whether or not the POST variable is sent, redirecting to the form process page. You should be doing something like this:

 

$valid_form = false;
if (!empty($_POST['days'])) {
   $_SESSION['days'] = $_POST['days'];
   header("Location: FormProcess.php");
}

[crunchie]

Thanks very much Teynon, that is exactly where the problem was.  So simple now that I see what was wrong.