我正在使用Chip Bennett的代码为我的插件创建一个设置选项页面。问题是，我得到一个警告错误，如下所示，我无法找出它。非常感谢您的帮助。

警告：call\\u user\\u func（ch\\u settings\\u defaults\\u style\\u section\\u text）[函数.call user func]：第一个参数应该是/home/loc123/public\\u html/domaindvb中的有效回调。com/wp admin/includes/template。php在线1083

    <?php
function ch_admin_options_page() {
    global $pagenow;
 ?>
    <div class="wrap">
<?php
        /* Calls function to add tabs */
        ch_admin_options_page_tabs ();

        /* adds the "updated" admin notice */
        if ( isset( $_GET[\'settings-updated\'] ) ) {
            echo "<div class=\'updated\'><p>Custom Header settings updated successfully.</p></div>";
        }
?>
        <form action="options.php" method="post">   
            <?php
            settings_fields(\'mycustom_options\');
            do_settings_sections(\'mycustom\');
            ?>
        <?php
        if ( \'themes.php\' == $pagenow && isset( $_GET[\'page\'] ) && \'ch-settings\' == $_GET[\'page\'] ) :
             if ( isset ( $_GET[\'tab\'] ) ) :
                  $tab = $_GET[\'tab\'];
             else:
                  $tab = \'general\';
             endif;
             switch ( $tab ) :
                  case \'general\' :
                require (\'options-register-defaults.php\') ; 
                break;
                  case \'Home Page\' :
                require( \'options-register-homepage.php\' );
                break;
             endswitch;
        endif; 
         ?>
        <p></br></p>

        <input name="mycustom_options[submit-<?php echo $tab; ?>]" type="submit" class="button-primary" value="<?php esc_attr_e(\'Save Settings\', \'default\'); ?>" />

        <?php /* Add a Reset Button */ ?>
        <input name="mycustom_options[reset-<?php echo $tab; ?>]" type="submit" class="button-secondary" value="<?php esc_attr_e(\'Reset Defaults\', \'default\'); ?>" />

        </form>

    </div>
<?php
}
?>

<?php
add_action(\'admin_init\', \'chr_settings\');
function chr_settings() {

    /*  register_setting( $option_group, $option_name, $sanitize_callback )- Associates an option group passed to settings_fields with database entry */
    register_setting( \'mycustom_options\', \'mycustom_options\', \'ch_options_validate\' ); 
    add_settings_section(\'ch_settings_defaults_style\', \'Style Options\', \'ch_settings_defaults_style_section_text\', \'mycustom\');

}
?>

<?php
function ch_settings_defaults_style_section_text() { ?>

     <p><?php _e( \'Manage Header options for the Oenology Theme. Refer to the contextual help screen for descriptions and help regarding each theme option.\', \'mycustom\' ); ?></p>
<?php 
}
?>