Need help with PHP contact form

Question

Hi guys,
I've made a PHP contact form for my site and need help with a couple of things:
The form action links an external PHP script (scripts/contact-form-script.php) but is there a way I can have it so the PHP script for the form is contained within the same PHP file as my contact form (contact.php)?
I tried just putting the form code at the top of contact.php but the browser automatically reads the anti-spam re-direct, so maybe that needs revising too?
The second thing is, how can I make the Name, Email and Message fields mandatory? So if a user tries to submit the form and hasn't filled in one of the required fields and clicks submit, contact.php reloads with a message at the top of the form saying something like 'Complete the required fields' and highlights the relevant field with a red border?
Here's the code for contact.php:
<form action="http://www.mydomain.com/scripts/contact-form-script.php" method="post" name="contact" id="contact">
<p><strong>Name:*</strong><br />
<input name="name" type="text" class="ctextField" /></p>
<p><strong>E-mail:*</strong><br />
<input name="email" type="text" class="ctextField" /></p>
<p><strong>Telephone:</strong><br />
<input name="telephone" type="text" class="ctextField" /></p>
<p><strong>Company:</strong><br />
<input name="company" type="text" class="ctextField" /></p>
<p><strong>Address:</strong><br />
<input name="address1" type="text" class="ctextField" /></p>
<p><input name="address2" type="text" class="ctextField" /></p>
<p><strong>Town:</strong><br />
<input name="town" type="text" class="ctextField" /></p>
<p><strong>County:</strong><br />
<input name="county" type="text" class="ctextField" /></p>
p><strong>Postcode:</strong><br />
<input name="postcode" type="text" class="ctextField" /></p>
<p><strong>Message:*</strong><br />
<textarea name="message" cols="55" rows="8" class="ctextField"></textarea></p>
<p><input name="submit" value="SEND MESSAGE" class="submitButton" type="submit" /><div style="visibility:hidden; width:1px; height:1px"><input name="url" type="text" size="45" id="url" /></div></p>
</form>
And this is the PHP I'm using to submit the form data for contact-form-script.php:
<?php
$headers .= "Reply-To: " . $_POST["email"] . "\r\n";
$to = "[email protected]";
$subject = "Contact from website";
$message = $headers;
$message .= "Name: " . $_POST["name"] . "\r\n";
$message .= "E-mail: " . $_POST["email"] . "\r\n";
        $message= '
            <table cellspacing="0" cellpadding="8" border="0" width="500">
            <tr>
                <td colspan="2"></td>
            </tr>
            <tr bgcolor="#eeeeee">
              <td width="154" style="font-family:Verdana, Arial; font-size:11px; color:#333333;"><strong>Name</strong></td>
              <td width="314" style="font-family:Verdana, Arial; font-size:11px; color:#333333;">'.$name.'</td>
            </tr>
            <tr bgcolor="#eeeeee">
              <td style="font-family:Verdana, Arial; font-size:11px; color:#333333;"><strong>E-mail address:</strong></td>
              <td style="font-family:Verdana, Arial; font-size:11px; color:#333333;">'.$email.'</td>
            </tr>
            <tr bgcolor="#eeeeee">
              <td style="font-family:Verdana, Arial; font-size:11px; color:#333333;"><strong>Telephone number:</strong></td>
              <td style="font-family:Verdana, Arial; font-size:11px; color:#333333;">'.$telephone.'</td>
            </tr>
            <tr bgcolor="#eeeeee">
              <td style="font-family:Verdana, Arial; font-size:11px; color:#333333;"><strong>Company:</strong></td>
              <td style="font-family:Verdana, Arial; font-size:11px; color:#333333;">'.$company.'</td>
            </tr>
            <tr bgcolor="#eeeeee">
              <td style="font-family:Verdana, Arial; font-size:11px; color:#333333;"><strong>Address</strong></td>
              <td style="font-family:Verdana, Arial; font-size:11px; color:#333333;">'.$address1.'</td>
            </tr>
            <tr bgcolor="#eeeeee">
              <td></td>
              <td style="font-family:Verdana, Arial; font-size:11px; color:#333333;">'.$address2.'</td>
            </tr>
            <tr bgcolor="#eeeeee">
              <td style="font-family:Verdana, Arial; font-size:11px; color:#333333;"><strong>Town</strong></td>
              <td style="font-family:Verdana, Arial; font-size:11px; color:#333333;">'.$town.'</td>
            </tr>
            <tr bgcolor="#eeeeee">
              <td style="font-family:Verdana, Arial; font-size:11px; color:#333333;"><strong>County</strong></td>
              <td style="font-family:Verdana, Arial; font-size:11px; color:#333333;">'.$county.'</td>
            </tr>
            <tr bgcolor="#eeeeee">
              <td style="font-family:Verdana, Arial; font-size:11px; color:#333333;"><strong>Postcode</strong></td>
              <td style="font-family:Verdana, Arial; font-size:11px; color:#333333;">'.$postcode.'</td>
            </tr>
            <tr bgcolor="#eeeeee">
                <td colspan="2" style="font-family:Verdana, Arial; font-size:11px; color:#333333;"><strong>Message</strong></td>
            </tr>              
            <tr bgcolor="#eeeeee">
                <td colspan="2" style="font-family:Verdana, Arial; font-size:11px; color:#333333;">'.$message.'</td>
            </tr>              
            <tr><td colspan="2" style="padding:0px;"><img src="images/whitespace.gif" alt="" width="100%" height="1" /></td></tr>
         </table>
$url = stripslashes($_POST["url"]);
if (!empty($url)) {
header( 'Location: http://www.go-away-spam-robots.com' );
exit();
mail($to, $subject, $message, $headers);
header( 'Location: http://www.mydomain.com/sent.php' ) ;
?>
Any help on this would be greatly appreciated.
Thank you and I hope to hear from you!
SM

Answer 1

Revised code with form validation for Name Email and Message:
<?php
if (array_key_exists('submit', $_POST)) {
    $name = $_POST['name'];
    $email = $_POST['email'];
    $telephone = $_POST['telephone'];
    $company = $_POST['company'];
    $address1 = $_POST['address1'];
    $address2 = $_POST['address2'];
    $town = $_POST['town'];
    $county = $_POST['county'];
    $postcode = $_POST['postcode'];
    $formMessage = $_POST['message'];
if (empty($name)) {
                                            $warning['name'] = "Please provide your name";
if (empty($email)) {
                                            $warning['email'] = "Please provide your email";
if (empty($formMessage)) {
                                            $warning['message'] = "Please provide your message";
$headers .= "Reply-To: " . $_POST["email"] . "\r\n";
$to = "[email protected]";
$subject = "Contact from website";
$message = $headers;
$message .= "Name: " . $_POST["name"] . "\r\n";
$message .= "E-mail: " . $_POST["email"] . "\r\n";
$headers  = "MIME-Version: 1.0\r\n";
$headers .= "Content-type: text/html; charset=iso-8859-1\r\n";
        $message= "
<table cellspacing='0' cellpadding='8' border='0' width='500'>
            <tr>
                <td colspan='2'></td>
            </tr>
            <tr bgcolor='#eeeeee'>
              <td width='154' style='font-family:Verdana, Arial; font-size:11px; color:#333333;'><strong>Name</strong></td>
              <td width='314' style='font-family:Verdana, Arial; font-size:11px; color:#333333;'>".$name."</td>
            </tr>
            <tr bgcolor='#eeeeee'>
              <td style='font-family:Verdana, Arial; font-size:11px; color:#333333;'><strong>E-mail address:</strong></td>
              <td style='font-family:Verdana, Arial; font-size:11px; color:#333333;'>".$email."</td>
            </tr>
            <tr bgcolor='#eeeeee'>
              <td style='font-family:Verdana, Arial; font-size:11px; color:#333333;'><strong>Telephone number:</strong></td>
              <td style='font-family:Verdana, Arial; font-size:11px; color:#333333;'>".$telephone."</td>
            </tr>
            <tr bgcolor='#eeeeee'>
              <td style='font-family:Verdana, Arial; font-size:11px; color:#333333;'><strong>Company:</strong></td>
              <td style='font-family:Verdana, Arial; font-size:11px; color:#333333;'>".$company."</td>
            </tr>
            <tr bgcolor='#eeeeee'>
              <td style='font-family:Verdana, Arial; font-size:11px; color:#333333;'><strong>Address</strong></td>
              <td style='font-family:Verdana, Arial; font-size:11px; color:#333333;'>".$address1."</td>
            </tr>
            <tr bgcolor='#eeeeee'>
              <td></td>
              <td style='font-family:Verdana, Arial; font-size:11px; color:#333333;'>".$address2."</td>
            </tr>
            <tr bgcolor='#eeeeee'>
              <td style='font-family:Verdana, Arial; font-size:11px; color:#333333;'><strong>Town</strong></td>
              <td style='font-family:Verdana, Arial; font-size:11px; color:#333333;'>".$town."</td>
            </tr>
            <tr bgcolor='#eeeeee'>
              <td style='font-family:Verdana, Arial; font-size:11px; color:#333333;'><strong>County</strong></td>
              <td style='font-family:Verdana, Arial; font-size:11px; color:#333333;'>".$county."</td>
            </tr>
            <tr bgcolor='#eeeeee'>
              <td style='font-family:Verdana, Arial; font-size:11px; color:#333333;'><strong>Postcode</strong></td>
              <td style='font-family:Verdana, Arial; font-size:11px; color:#333333;'>".$postcode."</td>
            </tr>
            <tr bgcolor='#eeeeee'>
                <td colspan='2' style='font-family:Verdana, Arial; font-size:11px; color:#333333;'><strong>Message</strong></td>
            </tr>              
            <tr bgcolor='#eeeeee'>
                <td colspan='2' style='font-family:Verdana, Arial; font-size:11px; color:#333333;'>".$formMessage."</td>
            </tr>              
            <tr><td colspan='2' style='padding: 0px;'><img src='images/whitespace.gif' alt='' width='100%' height='1' /></td></tr>
         </table>
$url = stripslashes($_POST["url"]);
if (!empty($url)) {
header( 'Location: http://www.go-away-spam-robots.com' );
exit();
if (!isset($warning)) {
mail($to, $subject, $message, $headers);
header( 'Location: http://www.mydomain.com/sent.php' ) ;
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Untitled Document</title>
<style type="text/css">
p {
    margin: 0;
    padding: 10px 0 0 0;
.warning {
    color:#C00;
</style>
</head>
<body>
<form action="" method="post" name="contact" id="contact">
<p><strong>Name:*</strong><br />
<input name="name" <?php if (isset($warning['name'])) { echo "style='border: 1px solid #C00'"; } ?> type="text" class="ctextField" />
<?php if (isset($warning['name'])) { echo "<p class='warning'>".$warning['name']."</p>"; }?>
</p>
<p><strong>E-mail:*</strong><br />
<input name="email" <?php if (isset($warning['email'])) { echo "style='border: 1px solid #C00'"; } ?>type="text" class="ctextField" />
<?php if (isset($warning['name'])) { echo "<p class='warning'>".$warning['email']."</p>"; }?>
</p>
<p><strong>Telephone:</strong><br />
<input name="telephone" type="text" class="ctextField" /></p>
<p><strong>Company:</strong><br />
<input name="company" type="text" class="ctextField" /></p>
<p><strong>Address:</strong><br />
<input name="address1" type="text" class="ctextField" /></p>
<p><input name="address2" type="text" class="ctextField" /></p>
<p><strong>Town:</strong><br />
<input name="town" type="text" class="ctextField" /></p>
<p><strong>County:</strong><br />
<input name="county" type="text" class="ctextField" /></p>
<p><strong>Postcode:</strong><br />
<input name="postcode" type="text" class="ctextField" /></p>
<p><strong>Message:*</strong><br />
<?php if (isset($warning['message'])) { echo "<p class='warning'>".$warning['message']."</p>"; }?>
<textarea name="message" <?php if (isset($warning['message'])) { echo "style='border: 1px solid #C00'"; } ?> cols="55" rows="8" class="ctextField"></textarea></p>
<p><input name="submit" value="SEND MESSAGE" class="submitButton" type="submit" /><div style="visibility:hidden; width:1px; height:1px"><input name="url" type="text" size="45" id="url" /></div></p>
</form>
</body>
</html>