Hello dears

我正在基于WordPress设置API为我的新WordPress插件编写一个管理面板。我正在定义一个字段，用于从此管理面板更改自定义post slug。在一些WordPress站点中更改了自定义slug之后，我们得到了该CPT URL的404个错误。因此，在管理面板中显示slug字段之前，我使用flush\\u rewrite\\u rules（）函数。您可以看到下面的代码。现在我想让你告诉我，我是否在正确的位置使用了flush\\u rewrite\\u rules函数？

function display_clink_main_slug(){

    // validate and update clink_main_slug value

    $clink_main_slug_option = get_option(\'clink_main_slug\');
    if( $clink_main_slug_option ){
        $clink_main_slug_option = str_replace(\' \', \'-\', $clink_main_slug_option); // Replaces all spaces with hyphens.
        $clink_main_slug_option = preg_replace(\'/[^A-Za-z0-9\\-]/\', \'\', $clink_main_slug_option); // Removes special chars.  
        update_option( \'clink_main_slug\', $value = $clink_main_slug_option );   
        $clink_main_slug_option = get_option(\'clink_main_slug\');
    }elseif( empty($clink_main_slug_option ) ){
        update_option( \'clink_main_slug\', $value = \'clink\' );
        $clink_main_slug_option = get_option(\'clink_main_slug\');
    }



    flush_rewrite_rules();


    $clink_slug_structure = get_bloginfo(\'url\') . \'/\' . $clink_main_slug_option . \'/link-name\';
    ?>
        <?php echo $clink_main_slug_option; ?>
        <input type="text" name="clink_main_slug" id="clink_main_slug" value="<?php echo $clink_main_slug_option; ?>" />
        <p class="description clink-description"><?php _e(\'Enter the clink plugin base slug for links. In default it set to <code>clink</code>\',\'aryan-themes\'); ?></p>
        <p class="description clink-description"><?php printf( __( \'Current links structure is like: <code>%s</code>\', \'aryan-themes\' ) , $clink_slug_structure ); ?></p>
    <?php 
}

if(isset($_GET[\'secret_variable\'])){
   flush_rewrite_rules();
}

function custom_post_type_function(){
    $args = array();
    register_post_type(\'custom_post_type\', $args);
}

function custom_flush_rules(){
    flush_rewrite_rules();
}
add_action(\'after_theme_switch\', \'custom_flush_rules\');
add_action(\'init\', \'custom_post_type_function\');