How can I keep variable on form until registration

[gokeeffe]

Can anyone help me with the following problem

I have a four step registration form with the fourth

page being the confirmation page where you submit the

details. My problem is this if someone wants to change

a detail or details they will click back to the appropriate

page and change the detail then move back to the conformation

page to submit the details when correct. The problem i have

is that the details are not showing up on the forms when

you click backwards, they are all blank, how can I keep them

in the form fields. I'm using session variables.

Here is the code of one of the pages.

<?php # index.php

// This is the main page for the site

// Include the configuration file for error management and such
require_once ('includes/config.inc');

// Set the title and the html header
$page_title = 'Step Two';

// Include the header file
include_once('includes/header.html');

require_once ('../mysql_connect.php'); // Connect to the Database
?>

<div id = "contentform">

<?php

if (isset($_POST['submit']))
{ // Check if the form has been submitted



if (($_POST['county_id']) == 1)
{ // Validate the secondary exam

$u4 = FALSE;
echo '<p class="validation">You forgot to select a county !</p>';
}

else
{
$u4 = escape_data($_POST['county_id']);
}

// Check for a town/region
if (eregi ("^[[:alnum:]_]{4,30}$", stripslashes(trim($_POST['town_region_name']))))

{
$u5 = escape_data($_POST['town_region_name']);
}

else
{
$u5 = FALSE;
echo '<p class="validation">Please enter a valid town/region!</p>';
}




if ($u4 && $u5)

{ // If everything is ok


// Get the users input from the form

$county_id = $_POST['county_id'];


// Start the session register the values and redirect

$_SESSION['county_id'] = $row[0];
$_SESSION['town_region_name'] = $_POST['town_region_name'];
$_SESSION['extra_location_details'] = $_POST['extra_location_details'];

ob_end_clean(); // Delete the buffer
header("Location:

http://"

. $_SERVER['HTTP_HOST'] . dirname($_SERVER['PHP_SELF']) . "step3.php");
//header('Location:

http://www.findagrind.ie/step3.php');

exit();

}

} // End Of Check if the form has been submitted

?>



<form name = "signup" id="signup" action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post">
<fieldset>
<legend>Step Two &nbsp;<font size="-2"><font color="#666666">County - Town - Additional</font></font></legend>
<h2>
Select County : Provides you with the option to select your county of choice</br></br>
Select Town/Region : Allows you to specify where exactly you would like to provide grinds eg. Dublin 4,Clonmel,Mallow</br></br>
Select Additional Location Details : Optional if you would like to be more specific</br>
</h2>

<?php




echo'<table align="center">';

echo'<tr>
<td colspan="2" class="labelcell"><label for="county_id">Select County:</label></td>';

echo'<td colspan="2" class="fieldcell2">

<select name="county_id">';

$query_result = mysql_query ('SELECT * FROM counties ORDER BY county_id');

while ($row = mysql_fetch_array ($query_result, MYSQL_NUM))

{
echo "<option value=\"$row[0]\">$row[1]</option>\n";
}
echo'</select></td>';

echo'</tr>';


mysql_close();


?>


<tr>
<td colspan="2" class="labelcell"><label for = "town_region_name">Town/Region</label></td>
<td colspan="2" class="fieldcell2"><input type="text" name="town_region_name" size="20" maxlength="20"
value="<?php if(isset($_POST['town_region_name'])) echo stripslashes($_POST['town_region_name']);?>"/>
</td>
</tr>



<tr>
<td colspan="2" class="labelcell"><label for = "extra_location_details">Additional Location Details</label></td>
<td colspan="2" class="fieldcell2"><input type="text" name="extra_location_details" size="100" maxlength="100"
value="<?php if(isset($_POST['extra_location_details'])) echo stripslashes($_POST['extra_location_details']);?>"/>
</td>
</tr>

</td>
</tr>
</table>

</fieldset>
<input type="submit" name="submit" value="Step Three" class="btn"/>

</br>
</br>

<?php
// Include the footer file
include_once('includes/footer.html');
?>

Please Please Help me

Tks

Gaz