PHP contact form isn't working when first installed - php

Question

I just installed a new PHP contact form but it isn't working. I already tried to fix it but I can't figure out how to fix it. Can somebody take a look at it and give me a fix?
The PHP code:
$to = 'email#hotmail.com';
$subject = 'Contact';
$contact_submitted = 'Your message has been sent.';
function email_is_valid($email) {
return preg_match('/^[A-Z0-9._%+-]+#[A-Z0-9.-]+\.[A-Z]{2,4}$/i',$email);
}
if (!email_is_valid($to)) {
echo '<p style="color: red;">You must set-up a valid (to) email address before this contact page will work.</p>';
}
if (isset($_POST['contact_submitted'])) {
$return = "\r";
$youremail = trim(htmlspecialchars($_POST['your_email']));
$yourname = stripslashes(strip_tags($_POST['your_name']));
$yourmessage = stripslashes(strip_tags($_POST['your_message']));
$contact_name = "Name: ".$yourname;
$message_text = "Message: ".$yourmessage;
$user_answer = trim(htmlspecialchars($_POST['user_answer']));
$answer = trim(htmlspecialchars($_POST['answer']));
$message = $contact_name . $return . $message_text;
$headers = "From: ".$youremail;
if (email_is_valid($youremail) && !eregi("\r",$youremail) && !eregi("\n",$youremail) && $yourname != "" && $yourmessage != "" && substr(md5($user_answer),5,10) === $answer) {
mail($to,$subject,$message,$headers);
$yourname = '';
$youremail = '';
$yourmessage = '';
echo '<p style="color: blue;">'.$contact_submitted.'</p>';
}
else echo '<p style="color: red;">Please enter your name, a valid email address, your message and the answer to the simple maths question before sending your message.</p>';
}
$number_1 = rand(1, 9);
$number_2 = rand(1, 9);
$answer = substr(md5($number_1+$number_2),5,10);
?>
<form id="contact" action="contact.php" method="post">
<div class="form_settings">
<p><span>Name</span><input class="contact" type="text" name="your_name" value="<?php echo $yourname; ?>" /></p>
<p><span>Email Address</span><input class="contact" type="text" name="your_email" value="<?php echo $youremail; ?>" /></p>
<p><span>Message</span><textarea class="contact textarea" rows="5" cols="50" name="your_message"><?php echo $yourmessage; ?></textarea></p>
<p style="line-height: 1.7em;">To help prevent spam, please enter the answer to this question:</p>
<p><span><?php echo $number_1; ?> + <?php echo $number_2; ?> = ?</span><input type="text" name="user_answer" /><input type="hidden" name="answer" value="<?php echo $answer; ?>" /></p>
<p style="padding-top: 15px"><span> </span><input class="submit" type="submit" name="contact_submitted" value="send" /></p>
</div>
</form>`
Can somebody help me? The error I get: http://i50.tinypic.com/2hfpe7m.jpg.

Answer 1

The fact that PHP commands are showing in your page clearly indicate that PHP is either not installed, or not properly configure. Make sure that it is up and running, and that your file has a .php extension.
Also your source code is missing the opening <?php. It might only be missing from your question, but make sure it is present in your file.

Answer 2

You're missing the opening PHP tag.
Simply add:
<?php
At the top of the script.