这就是WordPress API，用于此的适当工具是register_activation_hook 插件激活后立即触发，或after_setup_theme 如果你是为了一个主题而做这项工作。

下面是一个使用示例，代码应该放在主插件加载程序文件中，或者如果放在子目录中，则提供__FILE__ 主文件中的属性：

add_action( "admin_init", function(){
    if ( get_option( $opt_name = "se_show_my_plugin_wizard_notice" ) ) {
        delete_option( $opt_name );
        add_action( "admin_notices", "se_wizard_notice" );
    } return;
});

/**
  * Check if user has completed wizard already
  * if so then return true (don\'t show notice)
  *
  */
function se_wizard_completed() {
    return false;
}

function se_wizard_notice() {

    if ( se_wizard_completed() ) return; // completed already
    ?>

    <div class="updated notice is-dismissible">
        <p>Welcome to my plugin! You\'re almost there, but we think this wizard might help you setup the plugin.</p>
        <p><a href="admin.php?page=my_plugin_wizard" class="button button-primary">Run wizard</a> <a href="javascript:window.location.reload()" class="button">dismiss</a></p>
    </div>

    <?php

}

register_activation_hook( __FILE__, function() {
    update_option( "se_show_my_plugin_wizard_notice", 1 );
});