Get value from db for custom contact form

Question

I built my own contact form (no plugins) and want to have a secure way to get an emailadress from my option page. get_option and other built in WP stuff doesn't work from within my process.php file.

I tried to make a query to WP-Database like that:

$query  = "SELECT * FROM wp_options WHERE option_name = 'nothing_settings_contact' LIMIT 1";
$sender = mysql_query($query) or die(mysql_error());

But that also doesn work. (And if it would, I would just get an IP, with which I dont know what to do)

So: How do I get this emailadress in there, without exposing it to the users?

Edit: This is my process.php. I tried to require wp-blog-header, but it breaks process.php.

    <?php if( isset($_POST) ){

        require('http://www.bastards-design.de/sebastian/wp-blog-header.php');

        //form validation vars
        $formok = true;
        $errors = array();

        //sumbission data
        $ipaddress = $_SERVER['REMOTE_ADDR'];
        $date = date('d.m.Y');
        $time = date('H:i');

        //form data
        $name = $_POST['name']; 
        $email = $_POST['email'];
        $website = $_POST['website'];
        $enquiry = $_POST['enquiry'];
        $message = $_POST['message'];

        $receiver = $_POST['receiver'];
        $sender = "Niemand";// get_option('admin_email');

        if(empty($name)){
            $formok = false;
            $errors[] = "Sie haben keinen Namen angegeben.";
        }

        if(empty($email)){
            $formok = false;
            $errors[] = "Sie haben keine Emailadresse angegeben.";
        //validate email address
        }elseif(!filter_var($email, FILTER_VALIDATE_EMAIL)){
            $formok = false;
            $errors[] = "Sie haben keine gültige Emailadresse angegeben.";
        }

        if(empty($message)){
            $formok = false;
            $errors[] = "Das Nachrichtenfeld ist leer.";
        }
        elseif(strlen($message) < 20){
            $formok = false;
            $errors[] = "Ihre Nachricht muss mindestens 20 Zeichen enthalten.";
        }

        if($formok){
            $headers = "From: {$email}" . "\r\n";
            $headers .= 'Content-type: text/html; charset=UTF-8' . "\r\n";

            $emailbody = "<p><strong>Name: </strong> {$name} </p>
                          <p><strong>Website: </strong> {$website} </p>
                          <p><strong>Nachricht: </strong> {$message} </p>
                          <p>Diese Nachricht wurde am {$date} um {$time} über {$sender} gesendet.</p>";

            if($receiver){
                mail($receiver,"Anfrage ".$name,$emailbody,$headers);
            }
            else{
                mail('Sebastian.Starke1@googlemail.com',"Error",$emailbody,$headers);
            }
        }

        //what we need to return back to our form
        $returndata = array(
            'posted_form_data' => array(
                'name' => $name,
                'email' => $email,
                'website' => $website,
                'enquiry' => $enquiry,
                'message' => $message
            ),
            'form_ok' => $formok,
            'errors' => $errors
        );

        //if this is not an ajax request
        if(empty($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) !== 'xmlhttprequest'){
            //set session variables
            session_start();
            $_SESSION['cf_returndata'] = $returndata;

            //redirect back to form
            header('location: ' . $_SERVER['HTTP_REFERER']);
        }
    }

Answer 1

Add this at the start of your process.php file to get access to get_option and other wordpress functions:

define( 'WP_USE_THEMES', false );  
require('wp-blog-header.php'); 

You might have to change the path to wp-blog-header.php.