<?php require_once(ABSPATH . WPINC . '/registration.php'); global $wpdb, $user_ID; //Check whether the user is already logged in if ($user_ID) {

    // They're already logged in, so we bounce them back to the homepage.

    header( 'Location:' . home_url() );   } else {

    $errors = array();

    if( $_SERVER['REQUEST_METHOD'] == 'POST' ) {

        // Check username is present and not already in use
        $username = $wpdb->escape($_REQUEST['username']);
        if ( strpos($username, ' ') !== false ) {
            $errors['username'] = "Sorry, no spaces allowed in usernames";
        }
        if(empty($username)) {
            $errors['username'] = "Please enter a username";
        } elseif( username_exists( $username ) ) {
            $errors['username'] = "Username already exists, please try another";
        }

        // Check email address is present and valid
        $email = $wpdb->escape($_REQUEST['email']);
        if( !is_email( $email ) ) {
            $errors['email'] = "Please enter a valid email";
        } elseif( email_exists( $email ) ) {
            $errors['email'] = "This email address is already in use";
        }

        // Check password is valid
        if(0 === preg_match("/.{6,}/", $_POST['password'])){
          $errors['password'] = "Password must be at least six characters";
        }

        // Check password confirmation_matches
        if(0 !== strcmp($_POST['password'], $_POST['password_confirmation'])){
          $errors['password_confirmation'] = "Passwords do not match";
        }

        // Check terms of service is agreed to
        if($_POST['terms'] != "Yes"){
            $errors['terms'] = "You must agree to Terms of Service";
        }

        if(0 === count($errors)) {

            $password = $_POST['password'];

            $new_user_id = wp_create_user( $username, $password, $email );

            // You could do all manner of other things here like send an email to the user, etc. I leave that to you.

            $success = 1;

            header( 'Location:' . get_bloginfo('url') . '/login/?success=1&u=' . $username );

        }

    } } ?>

<form id="wp_signup_form" action="<?php echo $_SERVER['REQUEST_URI']; ?>" method="post">

        <label for="username">نام کاربری</label>
        <input type="text" name="username" id="username"><br>
        <label for="email">پست الکترونیکی</label>
        <input type="text" name="email" id="email"><br>
        <label for="password">کلمه عبور</label>
        <input type="password" name="password" id="password"><br>
        <label for="password_confirmation">تائید کلمه عبور</label>
        <input type="password" name="password_confirmation" id="password_confirmation"><br>

        <input name="terms" id="terms" type="checkbox" value="Yes">
        <label for="terms">من با شرایط استفاده از سرویس موافقم</label>

        <input type="submit" id="submitbtn" name="submit" value="ایجاد حساب" />   </form>