Как добавить поле для отправки данных?

<form action="#" method="post" class="post publisher-box"> 
<textarea></textarea>
</form>

function Register_Post($re_data = array('recipient_id' => 0)) {
    global $wo, $sqlConnect;

    $is_there_video = false;
    if (empty($re_data['user_id']) or $re_data['user_id'] == 0) {
        $re_data['user_id'] = $wo['user']['user_id'];
    }
    if (!is_numeric($re_data['user_id']) or $re_data['user_id'] < 0) {
        return false;
    }
    if ($re_data['user_id'] == $wo['user']['user_id']) {
        $timeline = $wo['user'];
    } else {
        $re_data['user_id'] = Wo_Secure($re_data['user_id']);
        $timeline           = Wo_UserData($re_data['user_id']);
    }
    if ($timeline['user_id'] != $wo['user']['user_id']) {
        return false;
    }
    if (!empty($re_data['page_id'])) {
        if (Wo_IsPageOnwer($re_data['page_id']) === false) {
            return false;
        }
    }
    if (!empty($re_data['group_id'])) {
        if (Wo_CanBeOnGroup($re_data['group_id']) === false) {
            return false;
        }
    }
    if (Wo_CheckIfUserCanPost($wo['config']['post_limit']) === false) {
        return false;
    }
    if (!empty($re_data['postText'])) {
        if ($wo['config']['maxCharacters'] > 0) {
            if (mb_strlen($re_data['postText']) > $wo['config']['maxCharacters']) {
            }
        }
        $re_data['postVine']        = '';
        $re_data['postYoutube']     = '';
        $re_data['postVimeo']       = '';
        $re_data['postDailymotion'] = '';
        $re_data['postFacebook']    = '';
        if (preg_match('%(?:youtube(?:-nocookie)?\.com/(?:[^/]+/.+/|(?:v|e(?:mbed)?)/|.*[?&]v=)|youtu\.be/)([^"&?/ ]{11})%i', $re_data['postText'], $match)) {
            $re_data['postYoutube'] = Wo_Secure($match[1]);
            $is_there_video         = true;
        }
        if (preg_match("#(?<=vine.co/v/)[0-9A-Za-z]+#", $re_data['postText'], $match)) {
            $re_data['postVine'] = Wo_Secure($match[0]);
            $is_there_video      = true;
        }
        if (preg_match("#https?://vimeo.com/([0-9]+)#i", $re_data['postText'], $match)) {
            $re_data['postVimeo'] = Wo_Secure($match[1]);
            $is_there_video       = true;
        }
        if (preg_match('#http://www.dailymotion.com/video/([A-Za-z0-9]+)#s', $re_data['postText'], $match)) {
            $re_data['postDailymotion'] = Wo_Secure($match[1]);
            $is_there_video             = true;
        }
        if (preg_match('~([A-Za-z0-9]+)/videos/(?:t\.\d+/)?(\d+)~i', $re_data['postText'], $match)) {
            $re_data['postFacebook'] = Wo_Secure($match[0]);
            $is_there_video          = true;
        }
        if (preg_match("~\bfacebook\.com.*?\bv=(\d+)~", $re_data['postText'], $match)) {
            $is_there_video = true;
        }
        if (preg_match('%(?:https?://)(?:www\.)?soundcloud\.com/([\-a-z0-9_]+/[\-a-z0-9_]+)%im', $re_data['postText'], $match)) {
            $arrContextOptions = array(
                "ssl" => array(
                    "verify_peer" => false,
                    "verify_peer_name" => false
                )
            );
 
    if (!empty($re_data['recipient_id']) && is_numeric($re_data['recipient_id']) && $re_data['recipient_id'] > 0) {
        if ($re_data['recipient_id'] == $re_data['user_id']) {
            return false;
        }
        $recipient = Wo_UserData($re_data['recipient_id']);
        if (empty($recipient['user_id'])) {
            return false;
        }
        if (!empty($recipient['user_id'])) {
            if ($recipient['post_privacy'] == 'ifollow') {
                if (Wo_IsFollowing($recipient['user_id'], $wo['user']['user_id']) === false) {
                    return false;
                }
            } else if ($recipient['post_privacy'] == 'nobody') {
                return false;
            }
        }
    }
    if (!isset($re_data['postType'])) {
        $re_data['postType'] = 'post';
    }
	if (isset($re_data['origin_id']) && $re_data['origin_id'] != 0) {
        $re_data['postType'] = 'share';
    }
    if (!empty($re_data['page_id'])) {
        $re_data['user_id'] = 0;
    }
    $fields  = '`' . implode('`, `', array_keys($re_data)) . '`';
    $data    = '\'' . implode('\', \'', $re_data) . '\'';
    $query   = mysqli_query($sqlConnect, "INSERT INTO " . T_POSTS . " ({$fields}) VALUES ({$data})");
    $post_id = mysqli_insert_id($sqlConnect);
    if ($query) {
        mysqli_query($sqlConnect, "UPDATE " . T_POSTS . " SET `post_id` = {$post_id} WHERE `id` = {$post_id}");
        if (isset($recipient['user_id'])) {
            $notification_data_array = array(
                'recipient_id' => $recipient['user_id'],
                'post_id' => $post_id,
                'type' => 'profile_wall_post',
                'url' => 'index.php?link1=post&id=' . $post_id
            );
            Wo_RegisterNotification($notification_data_array);
        }
        if (isset($mentions) && is_array($mentions)) {
            foreach ($mentions as $mention) {
                $notification_data_array = array(
                    'recipient_id' => $mention,
                    'page_id' => $re_data['page_id'],
                    'type' => 'post_mention',
                    'url' => 'index.php?link1=post&id=' . $post_id
                );
                Wo_RegisterNotification($notification_data_array);
            }
        }
        return $post_id;
    }

}