Wordpress 过滤器，更改插件数组

Question

这是我第一次尝试向我的functions.php 添加过滤器。我正在尝试覆盖插件设置的表单设置，具体取决于使用的表单或查看的页面。

我试图覆盖的数组在插件中看起来像这样：

$form_settings = (object) array(
            'form_title'                    => stripslashes( html_entity_decode( $form->form_title, ENT_QUOTES, 'UTF-8' ) ),
            'form_subject'                  => stripslashes( html_entity_decode( $form->form_email_subject, ENT_QUOTES, 'UTF-8' ) ),
            'form_to'                       => ( is_array( unserialize( $form->form_email_to ) ) ) ? unserialize( $form->form_email_to ) : explode( ',', unserialize( $form->form_email_to ) ),
            'form_from'                     => stripslashes( $form->form_email_from ),
            'form_from_name'                => stripslashes( $form->form_email_from_name ),
            'form_notification_setting'     => stripslashes( $form->form_notification_setting ),
            'form_notification_email_name'  => stripslashes( $form->form_notification_email_name ),
            'form_notification_email_from'  => stripslashes( $form->form_notification_email_from ),
            'form_notification_subject'     => stripslashes( html_entity_decode( $form->form_notification_subject, ENT_QUOTES, 'UTF-8' ) ),
            'form_notification_message'     => stripslashes( $form->form_notification_message ),
            'form_notification_entry'       => stripslashes( $form->form_notification_entry )
        );
        // Allow the form settings to be filtered (ex: return $form_settings->'form_title' = 'Hello World';)
        $form_settings = (object) apply_filters_ref_array( 'vfb_email_form_settings', array( $form_settings, $form_id ) );

我的functions.php看起来像

function maildeponselectcountry() {
    //here comes the new mailadress 
    $form_id = 2;

    $form_settings = array(
        "form_title" => "test"
    );

    apply_filters_ref_array( 'vfb_email_form_settings', array( $form_settings, $form_id ) );

}

apply_filters( 'vfb_email_form_settings', 'maildeponselectcountry' );

我对 apply_filters_ref_array 感到困惑。我该怎么办？我真的只想覆盖 $form_settings 数组中的 form_to。我会很感激任何提示！非常感谢！

Answer 1

您不需要使用apply_filters_ref_array。这就是插件允许您使用过滤器的地方。您还想使用add_filter 而不是apply_filter。 apply_filter 用于设置允许过滤的数据。

您的函数应该如下所示：

function maildeponselectcountry( array( $form_settings, $form_id ) ) {

    /* not sure what is actually passed here, 
       but if you need to check for the form_id, 
       it might be something like this. The passed array is actually an object 
       because of typecasting. */

    if ( $form_id->id == 2 ) {
       // Set the object property value
       $form_settings->form_title = 'test';
    }

    // return the form_settings with or without the updated value (depending on the form_id)
    return $form_settings;
}

// Use add_filter and set the priority.
add_filter( 'vfb_email_form_settings', 'maildeponselectcountry', 10 );

编辑：

尝试运行此测试：

function maildeponselectcountry( $form_settings ) {

       return $form_settings->form_title = 'Test';
    }

    // Use add_filter and set the priority.
    add_filter( 'vfb_email_form_settings', 'maildeponselectcountry', 10 );

运行时，从 '' 发布输出，以便我们可以看到返回的数据。