Contact Form 7 Extender

<?php
/**
 * Plugin Name: Contact Form 7 Extender
 * Description: This plugin saves input data from a form to the database.
 * Version: 1.1
 * Author: Marcus Thienert, Marco Gajardo
 */

add_action('wpcf7_before_send_mail', 'createPostData' );

function createPostData() {
         //get user id
         //$user = get_userdatabylogin('myusername');
         //$user = get_user_by('login', $user_login);
         //$udi = $user->ID;

         get_currentuserinfo();

         if ($_POST['aut'] == '') {
                 // Create post object
                 $my_post = array(
                         'post_title' => $_POST['title'],
                         'post_content' => $_POST['Description'],
                         'post_status' => 'pending',
                         'post_author' => 3,
                         'post_category' => array($_POST['postcategory'])
                 );
         } else {
                 $my_post = array(
                         'post_title' => $_POST['title'],
                         'post_content' => $_POST['Description'],
                         'post_status' => 'publish',
                         //'post_author' => $user,
                         'post_author' => $user_ID,
                         'post_category' => array($_POST['postcategory'])
                 );
         }

         //Insert the post into the database
         $post_id = wp_insert_post( $my_post );

         //Delete Date-Conf not Req.
         if ($_POST['Earlydate'] == date('Y-m-d')) {
                 $_POST['Earlydate'] = "";
         }
         if ($_POST['Abstractdate'] == date('Y-m-d')) {
                 $_POST['Abstractdate'] = "";
         }
         if ($_POST['Regdate'] == date('Y-m-d')) {
                 $_POST['Regdate'] = "";
         }

         //insert postmeta:
         update_post_meta($post_id, 'location', $_POST['location']);
         update_post_meta($post_id, 'date_start', $_POST['Startdate']);
         update_post_meta($post_id, 'date_end', $_POST['Enddate']);
         update_post_meta($post_id, 'email', $_POST['email-Contact']);
         update_post_meta($post_id, 'url', $_POST['URL']);
         update_post_meta($post_id, 'date_registration', $_POST['Regdate']);
         update_post_meta($post_id, 'date_early_registration', $_POST['Earlydate']);
         update_post_meta($post_id, 'date_abstract_deadline', $_POST['Abstractdate']);
         update_post_meta($post_id, 'date_deadline', $_POST['JobDate']);

         //insert tags to database
         $tagarray = explode(",",trim($_POST['Tagsconference']));
         wp_set_post_tags($post_id, $tagarray);

         //insert categories
         $post_categories = array ();
         $post_categories[4] = 'conferences';
         $postid = (int)$post_ID;
         wp_set_post_categories( $postID, $post_categories[4]);

        return;
}
?>