Here's a quick sample of how you can structure a form, and all it's
validation, and all it's error messages, and thankyou notes all onto one
script.
I haven't included every little line and data check that I should (otherwise
you'd have to pay me :P), but it works.
The beauty of keeping it all in one script is that you can echo the POSTed
variables back out into the form, with an error message.
This should be a suitable framework for you to further develop into your own
application.
<?
// uncomment next 3 lines if register globals off
// $name = $_POST['name'];
// $email = $_POST['email'];
// $action = $_GET['action'];
if(empty($action))
{
$show_form = 1;
}
else
{
$show_form = 0;
}
if($action == "validate")
{
$error = '';
// check for empty vars
if(empty($name)) { $error .= "- you didn't enter your name<br />"; }
if(empty($email)) { $error .= "- you didn't enter your email<br />"; }
// perform any other validation as needed
if($error)
{
$show_form = 1;
}
else
{
// insert into database, send email, redirect or whatever
header("Location: {$_SERVER['PHP_SELF']}?action=thanks");
exit;
}
}
?>
<html>
<body>
<?
if($show_form)
{
if($error)
{
echo "{$error}<br />";
}
echo "<form action='{$_SERVER['PHP_SELF']}?action=validate'
method='POST'>\n";
echo "Name: <input type='text' name='name' value='{$name}' /><br />";
echo "Email: <input type='text' name='email' value='{$email}' /><br />";
echo "<input type='submit' name='submit' value='submit' /><br />";
echo "</form>";
}
if($action == "thanks")
{
echo "thanks!!!";
}
?>
</body>
</html>
Justin French
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