我想用自定义的模板替换类函数包含的第三方插件中的模板。我试图通过扩展父类来重写该类函数，但目前这只是预期输出的两倍。如何删除原始功能？我需要删除父类中添加的筛选器？如何做到这一点？

主类如下所示：

class Import_Some_Events_Cpt {

    public function __construct() {
        add_filter( \'the_content\', array( $this, \'some_events_meta_before_content\' ) ); 
    }

    function some_events_meta_before_content( $content ) { 
        $event_details = $this->some_events_get_event_meta( get_the_ID() );
        $content = $event_details . $content;
        return $content;
    }

    function some_events_get_event_meta() {
        //here is included the original plugin template
    }
}

我的扩展类如下所示：

class Import_Some_Events_Cpt_Ext extends Import_Some_Events_Cpt {

    function some_events_meta_before_content( $content ) { 
        $event_details = $this->some_events_get_event_meta( get_the_ID() );
        $content = $event_details . $content;
        return $content;
    }

    function some_events_get_event_meta() {
        //here is included the customized template
    }
}

UPDATE

原始类Import\\u Some\\u Events\\u Cpt在另一个类中实例化：

class Import_Some_Events{
    private static $instance;
    public static function instance() {
        if( ! isset( self::$instance ) && ! (self::$instance instanceof Import_Some_Events ) ) {
            self::$instance = new Import_Some_Events;
            self::$instance->setup_constants();

            add_action( \'plugins_loaded\', array( self::$instance, \'load_textdomain\' ) );

            self::$instance->cpt    = new Import_Some_Events_Cpt();

        }
        return self::$instance; 
    }
}

此类从单独的函数实例化：

function run_import_some_events() {
    return Import_Some_Events::instance();
}

上述函数设置为变量：

$ife_events = run_import_some_events();

所有代码都位于我要重写的类以外的其他文件中。

对不起，如果我犯了错误，我不是程序员。

function wpse282960_remove_filter() {
    $run_import_some_events = run_import_some_events();
    remove_filter( \'the_content\', array($run_import_some_events->cpt, \'some_events_meta_before_content\') );
}
add_action( \'template_redirect\', \'wpse282960_remove_filter\' );