我知道我可能在做一些愚蠢的事情，但我就是不能让它运行。我正在尝试为我的插件设置一个小API，并创建一个类来更轻松地显示管理通知。以下是我所拥有的：

// Send data to class to get HTML for admin notice
$efpd=Efpdd::getInstance();
$plugin_update = $efpd->efpd_admin_notice(
    $notice_info = array(
        \'type\' => \'update\',
        \'message\' => \'The plugin has just been updated.\',
        \'button\' => \'Click for details\'
    )
);
//wp_die(var_dump($plugin_update)); // Testing output of admin notice HTML code
add_action(\'admin_notices\',function(){echo $plugin_update;});

在我的课堂上，有一个函数：

public function efpd_admin_notice($data=array()){
    extract($data); // Extracts $message, $type, and $button from $data array
    if(empty($message) && !empty($type)){ // If no message was passed through the $data array, create one based on the type of notice passed, also begin the HTML output here
        switch($type){
            case \'error\':
                $message = \'There\\\'s been an error!\';
                $return = "<div id=\\"message\\" class=\\"error\\">\\n";
            break;
            case \'update\':
                $message = \'There\\\'s been an update!\';
                $return = "<div id=\\"message\\" class=\\"updated\\">\\n";
            break;
            default:
                $message = \'There\\\'s something wrong with your code...\';
                $return = "<div id=\\"message\\" class=\\"error\\">\\n";
            break;
        }
    }
    if(empty($button)) $button = \'Click Here\';
    $return .= "    <p style=\\"float: left;\\">{$message}</p>\\n";
    $return .= "    <p style=\\"float: left;\\"><a href=\\"{$settings_url}&amp;clear_cache=y\\">{$button}</a></p>\\n";
    $return .= "</div>\\n";
    return $return;
}

所以我想我是在问，我有什么错让这个管理通知不显示？是否有一个解决方法来实现这一点？谢谢

function plugin_update(){
    $plugin_update = Efpdd::efpd_admin_notice(array(
        \'type\' => \'update\',
        \'message\' => \'The plugin has just been updated.\',
        \'button\' => \'Click for details\'
    );
    echo $plugin_update;
);
add_action(\'admin_notices\', \'plugin_update\');

add_action(\'admin_notices\',         \'your_function\');
add_action(\'network_admin_notices\', \'your_function\');