Multibyte CAPTCHA login and Mail only register

Login form with Multibyte CAPTCHA

• Anti-Bot measures with original CAPTCHA.
• WordPress : wp-login.php
• WordPress : wp-login.php?action=register
• WordPress : wp-login.php?action=lostpassword

Register

• Register only email address.
• Can check the terms of use agreement for user register.
• Anti-Bot measures with original CAPTCHA.
• WordPress : wp-login.php?action=register
• shortcode : [umorregister]

Filter for shortcode form

/** ==================================================
 * Filter for message.
 *
 */
add_filter( 'umor_register_success_msg', function(){ return 'Message for register success.'; }, 10, 1 );
add_filter( 'umor_login_success_login_msg', function(){ return 'Message for login success.'; }, 10, 1 );
add_filter( 'umor_register_error', function(){ return 'Message for register error.'; }, 10, 1 );
add_filter( 'umor_register_nomail', function(){ return 'Message for unentered mail.'; }, 10, 1 );
add_filter( 'umor_register_noterm', function(){ return 'Message for unentered term of use.'; }, 10, 1 );
add_filter( 'umor_register_form_label', function(){ return 'Message for form label.'; }, 10, 1 );
add_filter( 'umor_register_term_of_use', function(){ return 'Message for term of use.'; }, 10, 1 );
add_filter( 'umor_not_register_message', function(){ return 'Message for not register.'; }, 10, 1 );

/** ==================================================
 * Filter for login form message.
 *
 */
add_filter(
    'umor_login_message',
    function( $message, $text ) {
        $message = '
';
        $message .= $text;
        $message .= '
';
        return $message;
    },
    10,
    2
);

/** ==================================================
 * Filter for Term of use URL.
 *
 */
add_filter(
    'umor_register_term_of_use_url',
    function( $term_of_use_url ) {
        if ( 'ja' === get_locale() ) {
            $term_of_use_url = 'https://test.com/ja/';
        }
        return $term_of_use_url;
    },
    10,
    1
);

/** ==================================================
 * Filter for input text size.
 *
 */
add_filter( 'umor_register_input_size', function(){ return 17; }, 10, 1 );

/** ==================================================
 * Filter for class name.
 *
 */
add_filter( 'umor_register_notice_class_name', function(){ return 'mynotice'; }, 10, 1 );
add_filter( 'umor_register_form_class_name', function(){ return 'myform'; }, 10, 1 );
add_filter( 'umor_register_label_class_name', function(){ return 'mylabel'; }, 10, 1 );
add_filter( 'umor_register_input_class_name', function(){ return 'myinput'; }, 10, 1 );
add_filter( 'umor_register_check_form_class_name', function(){ return 'mycheckform'; }, 10, 1 );
add_filter( 'umor_register_check_class_name', function(){ return 'mycheck'; }, 10, 1 );
add_filter( 'umor_register_captcha_input_class_name', function(){ return 'mycaptcha_input'; }, 10, 1 );
add_filter( 'umor_register_submit_class_name', function(){ return 'mysubmit'; }, 10, 1 );

1. Upload user-mail-only-register directory to the /wp-content/plugins/ directory
2. Activate the plugin through the ‘Plugins’ menu in WordPress

none

1. 

   Register form by WordPress

2. 

   Register form by shortcode

3. 

   CAPTCHA Settings

4. 

   Other Settings

[4.03] 2025/12/03

• Fix – Hide password reset link.

[4.02] 2025/12/02

• Added – The use of CAPTCHA login can be selected.

[4.01] 2025/05/06

• Fix – Translation.

[4.00] 2025/05/06

• Change – Plugin name.
• Added – Multibyte CAPTCHA now supports the standard WordPress login form.

[3.05] 2025/04/26

• Fix – CSS.

[3.04] 2025/04/26

• Fix – CSS.

[3.03] 2025/04/25

• Added – CAPTCHA now supports the standard WordPress registration form.
• Added – Add own CSS for shortcode output.

[3.02] 2025/04/24

• Added – Add numbers and katakana to the CAPTCHA string.

[3.01] 2025/04/22

• Fix – Error message display.

[3.00] 2025/04/22

• Added – Really Simple CAPTCHA was scrapped and our own CAPTCHA was added.

[2.14] 2025/04/21

• Added – Supported Really Simple CAPTCHA.

[2.13] 2025/04/14

• Fix – Loading the management screen.

[2.12] 2024/03/04

• Fix – Elimination of short code attribute values.

2.11

Changed parse_url to wp_parse_url.

2.10

Supported WordPress 6.4.
PHP 8.0 is now required.

2.09

Added escaping process.

2.08

Added escaping process.

2.07

Added url filter(‘umor_register_term_of_use_url’) for term of use.

2.06

Added “aria-label” attributes to the checkbox form.

2.05

Added class name filter(‘umor_register_form_class_name’) for register form.
Added class name filter(‘umor_register_check_form_class_name’) for register form.
Added “placeholder” and “required” attributes to the email input form.
Added “required” attributes to the checkbox input form.

2.04

Changed input size.

2.03

Fixed escape for form.

2.02

Added validation to the email address input field of the shortcode form.

2.01

Added some filters.
Change readme.txt.

2.00

Added a original login form with shortcode.
The block has been removed.

1.12

Fixed a problem with the password reset link.

1.11

Fixed a problem with the password reset link.

1.10

Supported WordPress 5.6.

1.09

Added function by hide the link to “Log in” and “Lost your password”.
Changed management screen.

1.08

Fixed shortcode.

1.07

Fixed sample code.

1.06

The block now supports ESNext.

1.05

Conformed to the WordPress coding standard.

1.04

Add WordPress user settings.

1.03

Described the hook description on the management screen.

1.02

Fixed error on activation.
Added a filter “umor_not_register_message” for messages when user registration is not allowed.

1.01

Can add text at email notification.
Can stop mail notification of this plugin.

1.00

Initial release.