我有以下代码来生成自定义post类型对象：

public function __construct( $name, $args = array(), $labels = array() ) {

    // Set Variables
    $this->post_type_name      = self::uglify( $name );
    $this->post_type_args      = $args;
    $this->post_type_lables    = $labels;

在类的后面，我有一个方法，该方法生成带有一些默认值的标签，然后允许在创建类的新实例时传入重写。

// Set labels with some defaults and merge in overrides
$labels = array_merge(

    // Default values
    array(
        \'name\'               => _x( $plural, \'Post Type General Name\' ),
        \'singular_name\'      => _x( $name, \'Post Type Singular Name\' ),
        \'add_new\'            => _x( \'Add New \', strtolower( $name ) ),
        \'add_new_item\'       => __( \'Add New \' . $name ),
        \'edit_item\'          => __( \'Edit \' . $name ),
        \'new_item\'           => __( \'New \' . $name ),
        \'all_items\'          => __( \'All \' . $plural ),
        \'view_item\'          => __( \'View \' . $name ),
        \'search_items\'       => __( \'Search \', $plural ),
        \'not_found\'          => __( \'No \' . strtolower( $plural ) . \' found\' ),
        \'not_found_in_trash\' => __( \'No \' . strtolower( $plural ) . \' found in Trash\' ),
        \'parent_item_colon\'  => \'\',
        \'menu_name\'          => $plural
    ),

    // Overrides
    $this->post_type_labels
);

在WordPress中查看调试日志时，我发现出现了一个错误，参数#2，$this->post_type_labels 不是数组，即使在创建过程中省略了它，默认情况下也会传入一个空数组。

如何清除此警告并确保$this->post_type_labels 是数组吗？我没有收到同样的信息$args

$this->post_type_lables    = $labels;