customization - Create membership number for existingnew users

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I have a membership site with 4000+ users currently on it.

I am needing to give both new/existing users an automatic ID number.

its very similar to this: Create Unique ID for user

However, this only works for new users, I need it to work for the current users too. So for instance, user id 3421 would get membership number 3421.

This is what I have so far: (pretty much all from above link)

function fb_add_custom_user_profile_fields( $user ) { ?>
        <h3><?php _e('Extra Profile Information', 'Avada'); ?></h3>
            <table class="form-table">
                <tr>
                    <th>
                        <label for="memnumber"><?php _e('Membership Number', 'Avada'); ?>
                        </label>
                    </th>
                    <td>
                    <input type="text" name="memnumber" id="memnumber" value="<?php echo esc_attr( get_the_author_meta( 'memnumber', $user->ID ) ); ?>" class="regular-text" /><br />
                    </td>
                </tr>
            </table>
        <?php }

    function fb_save_custom_user_profile_fields( $user_id ) {
        if ( !current_user_can( 'edit_user', $user_id ) )
            return FALSE;
        update_usermeta( $user_id, 'memnumber', $_POST['memnumber'] );
    }
    add_action( 'show_user_profile', 'fb_add_custom_user_profile_fields' );
    add_action( 'edit_user_profile', 'fb_add_custom_user_profile_fields' );
    add_action( 'personal_options_update', 'fb_save_custom_user_profile_fields' );
    add_action( 'edit_user_profile_update', 'fb_save_custom_user_profile_fields' );




    add_action( 'user_register', 'assignuserid');

    function assignuserid($user_id) {
    global $wpdb;
    $latestid=$wpdb->get_var("SELECT meta_value from $wpdb->usermeta where meta_key='memnumber' order by meta_value DESC limit 1;");
    update_user_meta( $user_id, 'memnumber', $latestid +1 );
}

Any advice would be appreciated.

本文标签： customizationCreate membership number for existingnew users