submission.php

<?php

    mb_internal_encoding('UTF-8');

    function addInformation(DOMDocument $dom, $fields) {
        $tags = $dom->getElementsByTagName('input');
        for ($i = 0; $i < $tags->length; $i++) {
            foreach ($tags->item($i)->attributes as $attr) {
                if ($attr->nodeName == 'name') {
                    $tags->item($i)->setAttribute('value', $fields[$attr->nodeValue]);
                }
            }
        }
        $dom->getElementsByTagName('textarea')->item(0)->nodeValue = $fields['msg'];
    }

    $fields = array('fname', 'lname', 'str', 'strnr', 'plz', 'email', 'tel', 'msg');
    $dfields = array('fname', 'lname', 'email', 'tel');
    $captcha;

    $alert = false;

    foreach ($fields as $field) {
        if (isset($_POST['fname'])) {
            $fields[$field] = $_POST[$field];
        } else {
            header('HTTP/1.1 500 Internal Server Error');
            echo '<h2>500 Internal Server Error!</h2>';
            exit;
        }
        if (in_array($field, $dfields)) {
            if ($fields[$field] == null || $fields[$field] == '')
            $alert = true;
        }
    }

    if (isset($_POST['g-recaptcha-response'])) {
        $captcha = $_POST['g-recaptcha-response'];
    } else {
        header('HTTP/1.1 500 Internal Server Error');
        echo '<h2>500 Internal Server Error!</h2>';
        exit;
    }

    if (!$captcha || $alert) {
        $html = new DOMDocument();
        libxml_use_internal_errors(true);
        $html->loadHTMLFile('kontakt.html');
        libxml_use_internal_errors(false);
        if ($alert) {
            $html->getElementById('formError')->setAttribute('style', 'display: block !important');
        }
        if (!$captcha) {
            $html->getElementById('captError')->setAttribute('style', 'display: block !important');
        }
        addInformation($html, $fields);
        echo $html->saveHTML();
        exit;
    }

    $response = file_get_contents('https://www.google.com/recaptcha/api/siteverify?secret=SecretKeyGoesHere&response='.$captcha.'&remoteip='.$_SERVER['REMOTE_ADDR']);
    $data = json_decode($response);

    if (isset($data->success) AND $data->success==true) {
        readfile('nachricht.html');
    } else {
        $html = new DOMDocument();
        libxml_use_internal_errors(true);
        $html->loadHTMLFile('kontakt.html');
        libxml_use_internal_errors(false);
        $html->getElementById('captError')->setAttribute('style', 'display: block !important');
        addInformation($html, $fields);
        echo $html->saveHTML();
        exit;
    }

    /*foreach ($fields as $field) {
        if ($fields[$field] == null || $fields[$field] == '') {
            $fields[$field] = '--Keine Angabe--';
        }
    }*/

    $to      = '[email protected]';
    $subject = 'Eine neue Nachicht wurde von deiner Website versendet';
    $headers = 'Reply-To: '. strip_tags($fields['email']) . '\r\n';
    $headers .= 'MIME-Version: 1.0\r\n';
    $headers .= 'Content-Type: text/html; charset=utf-8\r\n';

    $message =
        'Absenderinformationen<br>' .
        'Name: ' .$fields['fname']. '<br>' .
        'Nachname: ' .$fields['lname']. '<br>' .
        'Straße: ' .$fields['str']. '<br>' .
        'Hausnummer: ' .$fields['strnr']. '<br>' .
        'Postleitzahl: ' .$fields['plz']. '<br>' .
        'E-Mail Addresse: ' .$fields['email']. '<br>' .
        'Telefonnummer: ' .$fields['tel']. '<br><br><br>' .
        'Nachicht:<br>' .$fields['msg'];

    mail($to, $subject, $message, $headers);

?>