这很简单。只需将功能和选项添加到show_user_profile 和edit_user_profile 挂钩，并将其保存在personal_options_update 和edit_user_profile_update.

例如，像这样（您可以添加自己的字段（文本、数字等））

/********* Additional User Content ***********/
add_action( \'show_user_profile\', \'mytheme_extra_profile_fields\' );
add_action( \'edit_user_profile\', \'mytheme_extra_profile_fields\' );

function mytheme_extra_profile_fields( $user ) { ?>
    <?php $customData = get_user_meta( $user->ID, \'custom_user_fields\', true ); ?>

    <h3><?php esc_html_e(\'Custom option\', \'mytheme\'); ?></h3>

    <table class="form-table">

        <tr>
            <th><?php esc_html_e(\'Custom option\', \'mytheme\'); ?></th>

            <td>
                <input type="checkbox" name="custom_user_fields_option" id="option" value="1" <?php if(isset($customData[\'checkbox\'])){ checked($customData[\'checkbox\'], 1); } ?>/>
                <span class="description"><?php esc_html_e(\'Check for an option.\', \'mytheme\'); ?></span>
            </td>
        </tr>

    </table>
<?php }


add_action( \'personal_options_update\', \'mytheme_save_extra_profile_fields\' );
add_action( \'edit_user_profile_update\', \'mytheme_save_extra_profile_fields\' );

function mytheme_save_extra_profile_fields( $user_id ) {

    $userData = array();

    if ( !current_user_can( \'edit_user\', $user_id ) )
        return false;

    if(!empty( $_POST[\'custom_user_fields_option\'] )) {
        $userData[\'checkbox\'] = intval( $_POST[\'custom_user_fields_option\'] );
    }

    if(!empty($userData)) {
        update_user_meta( $user_id, \'custom_user_fields\', $userData);
    }
}