Parse Error in unexpected T_Variable. Subscription Mail Form

So I have this form.

Its a very simple mail/newsletter form.

  <form action="http://localhost/website/subscribe.php" method="POST" id="signup_form">

  <label for="email"><p id = "subText">Subscribe</p></label>

  <input type="text" name="email" size="30" class="required email txtEmail" placeholder = "Enter Email Address">

  <input type="submit" value="Go" name="submit" class = "goButton"/>

  </form>

and I have this subscribe.php file.

<?php

if(isset($_POST['email']))

{

    // EDIT THE 2 LINES BELOW AS REQUIRED

    $email_to = "email@email.com";

    $email_subject = "Subscription";



    function died($error)

    {

        // your error code can go here

        echo "We are very sorry, but there were error(s) found with the form you submitted. ";

        echo "These errors appear below.<br /><br />";

        echo $error."<br /><br />";

        echo "Please go back and fix these errors.<br /><br />";

        die();

    }



    // validation expected data exists

    if( !isset($_POST['email']))

    {

        died('We are sorry, but there appears to be a problem with the form you submitted.');       

    }



    $email_from = $_POST['email']; // required

    $error_message = "";

    $email_exp = '/^[A-Za-z0-9._%-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,4}$/';



    if(!preg_match($email_exp,$email_from))

    {

        $error_message .= 'The Email Address you entered does not appear to be valid.<br />';

    }



    if(strlen($error_message) > 0)

    {

        died($error_message);

    }



    $email_message = "Form details below.\n\n";



    function clean_string($string)

    {

        $bad = array("content-type","bcc:","to:","cc:","href");

        return str_replace($bad,"",$string);

    }



    $email_message .= "Email: ".clean_string($email_from)."\n";



    // create email headers

    $headers = 'From: '.$email_from."\r\n".

               'Reply-To: '.$email_from."\r\n" .

               'X-Mailer: PHP/' . phpversion();

    @mail($email_to, $email_subject, $email_message, $headers);  

?>

<!-- include your own success html here -->

Thank you for contacting us. We will be in touch with you very soon.

<?php

}

?>

That I found here, I just edited it a bit to fit my form. I'm really new to PHP and I'm still in the practice phase.

The error I get is

PHP Parse error:  syntax error, unexpected T_VARIABLE in /home/techstars05/www/website/subscribe.php on line 6, referer: http://localhost/website/index.html

I'm using sublime text 2 to edit the codes and I noticed that "if(isset($_POST['email']))"'s 'if' is of a different color from the other ifs from the subscribe.php file. Its pink while the others are violet-ish. I'm not really sure what does mean, I tried tracing the code but to my newbie eyes it looks quite fine.

TIA