问题：

未捕获错误：无法将WP_Post类型的对象用作数组

吴正祥

2023-03-14

我试图在模板文件中放置WordPress菜单。我发现使用wp_nav_菜单不舒服，因为它输出的标记与我的静态HTML模板不兼容。我知道我可以使用定制的menu walker类来修改wp_nav_菜单的标记。但是，我只想使用菜单名及其对应的url，并将其放在我的模板中。为此，我使用此函数获取菜单的所有属性/属性的数组。

    Array
(
    [0] = WP_Post Object
        (
            [ID] = 20
            [post_author] = 1
            [post_date] = 2017-07-10 11:50:32
            [post_date_gmt] = 2017-07-10 10:50:32
            [post_content] = 
            [post_title] = About
            [post_excerpt] = 
            [post_status] = publish
            [comment_status] = closed
            [ping_status] = closed
            [post_password] = 
            [post_name] = about
            [to_ping] = 
            [pinged] = 
            [post_modified] = 2017-07-10 11:50:40
            [post_modified_gmt] = 2017-07-10 10:50:40
            [post_content_filtered] = 
            [post_parent] = 0
            [guid] = http://localhost/mySite/?p=20
            [menu_order] = 1
            [post_type] = nav_menu_item
            [post_mime_type] = 
            [comment_count] = 0
            [filter] = raw
            [db_id] = 20
            [menu_item_parent] = 0
            [object_id] = 20
            [object] = custom
            [type] = custom
            [type_label] = Custom Link
            [title] = About
            [url] = #
            [target] = 
            [attr_title] = 
            [description] = 
            [classes] = Array
                (
                    [0] = 
                )

            [xfn] = 
        )

    [1] = WP_Post Object
        (
            [ID] = 21
            [post_author] = 1
            [post_date] = 2017-07-10 11:50:32
            [post_date_gmt] = 2017-07-10 10:50:32
            [post_content] = 
            [post_title] = Things I Can Do
            [post_excerpt] = 
            [post_status] = publish
            [comment_status] = closed
            [ping_status] = closed
            [post_password] = 
            [post_name] = things-i-can-do
            [to_ping] = 
            [pinged] = 
            [post_modified] = 2017-07-10 11:50:40
            [post_modified_gmt] = 2017-07-10 10:50:40
            [post_content_filtered] = 
            [post_parent] = 0
            [guid] = http://localhost/mySite/?p=21
            [menu_order] = 2
            [post_type] = nav_menu_item
            [post_mime_type] = 
            [comment_count] = 0
            [filter] = raw
            [db_id] = 21
            [menu_item_parent] = 0
            [object_id] = 21
            [object] = custom
            [type] = custom
            [type_label] = Custom Link
            [title] = Things I Can Do
            [url] = #
            [target] = 
            [attr_title] = 
            [description] = 
            [classes] = Array
                (
                    [0] = 
                )

            [xfn] = 
        )

    [2] = WP_Post Object
        (
            [ID] = 22
            [post_author] = 1
            [post_date] = 2017-07-10 11:50:32
            [post_date_gmt] = 2017-07-10 10:50:32
            [post_content] = 
            [post_title] = A Few Accomplishments
            [post_excerpt] = 
            [post_status] = publish
            [comment_status] = closed
            [ping_status] = closed
            [post_password] = 
            [post_name] = a-few-accomplishments
            [to_ping] = 
            [pinged] = 
            [post_modified] = 2017-07-10 11:50:40
            [post_modified_gmt] = 2017-07-10 10:50:40
            [post_content_filtered] = 
            [post_parent] = 0
            [guid] = http://localhost/mySite/?p=22
            [menu_order] = 3
            [post_type] = nav_menu_item
            [post_mime_type] = 
            [comment_count] = 0
            [filter] = raw
            [db_id] = 22
            [menu_item_parent] = 0
            [object_id] = 22
            [object] = custom
            [type] = custom
            [type_label] = Custom Link
            [title] = A Few Accomplishments
            [url] = #
            [target] = 
            [attr_title] = 
            [description] = 
            [classes] = Array
                (
                    [0] = 
                )

            [xfn] = 
        )

    [3] = WP_Post Object
        (
            [ID] = 23
            [post_author] = 1
            [post_date] = 2017-07-10 11:50:32
            [post_date_gmt] = 2017-07-10 10:50:32
            [post_content] = 
            [post_title] = Contact
            [post_excerpt] = 
            [post_status] = publish
            [comment_status] = closed
            [ping_status] = closed
            [post_password] = 
            [post_name] = contact
            [to_ping] = 
            [pinged] = 
            [post_modified] = 2017-07-10 11:50:40
            [post_modified_gmt] = 2017-07-10 10:50:40
            [post_content_filtered] = 
            [post_parent] = 0
            [guid] = http://localhost/mySite/?p=23
            [menu_order] = 4
            [post_type] = nav_menu_item
            [post_mime_type] = 
            [comment_count] = 0
            [filter] = raw
            [db_id] = 23
            [menu_item_parent] = 0
            [object_id] = 23
            [object] = custom
            [type] = custom
            [type_label] = Custom Link
            [title] = Contact
            [url] = #
            [target] = 
            [attr_title] = 
            [description] = 
            [classes] = Array
                (
                    [0] = 
                )

            [xfn] = 
        )

)

我该怎么做？

我目前正在努力处理这些代码行

function mt_get_menu_items($menu_name) {
if ( ( $locations = get_nav_menu_locations() ) && isset( $locations[ $menu_name ] ) ) {
    $menu = wp_get_nav_menu_object( $locations[ $menu_name ] );
    return wp_get_nav_menu_items($menu->term_id);
}
}
$menu_items = mt_get_menu_items ('main_menu');
<nav id="nav">
<ul>
    <?php if (isset ($menu_items) ) : ?>
    <?php foreach ( (array) $menu_items as $key => $menu_item ) : ?>
    <?php // $menu_item_array = get_object_vars($menu_item[$key]);
                    $menu_object = $menu_item[$key];
                    // this line is 98
                 ?>
    <li>
         // this line is 101
        <a href="<?php $menu_object->url; ?>" class="active"><?php $menu_object->post_title; ?></a>
    </li>
    <?php endforeach; ?>
    <?php endif; ?>
</ul>
</nav>

这将生成以下错误：

致命错误：未捕获错误：无法使用类型WP_Post对象作为数组在D：\xampp\htdocs\mySite\wp-内容\主题\mySite\header.php:98

共有2个答案

舒嘉德

2023-03-14

您正在检索一个对象，您可以将其转换为一个数组，如下所示：

function object_to_array($obj) {
if(is_object($obj)) $obj = (array) $obj;
    if(is_array($obj)) {
        $new = array();
        foreach($obj as $key => $val) {
            $new[$key] = object_to_array($val);
        }
    }
    else $new = $obj;
    return $new;       
}

澹台奇略

2023-03-14

我要把这个答案贴在这里供参考...

使用Foreach循环

foreach ($originalArray as $key => $data) {
  $post_date = $data->post_date; // 2017-07-10 11:50:32
}

因为要访问对象内部的数据，请使用-

例如：$data['post_date']至$data-

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共有2个答案

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