请帮助：“在Wordpress中为foreach（）提供了无效的参数”

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我正在创建WP网站。在首页中，我收到一个错误：

警告：在第108行的/home2/siilverp/public_html/wp-content/themes/mts_steadyincome/page-home.php中为foreach（）提供了无效的参数

这是page-home.php的代码：

  <?php if(!empty($mts_options['mts_featured_posts']) && !empty($mts_options['mts_featured_post_cat'])) { ?>
                <div class="home_article">
                    <?php 
                    foreach ( $mts_options['mts_featured_post_cat'] as $cat_id ) {
                        $featured_query = new WP_Query( apply_filters( 'steadyincome_featured_posts_query', array(
                            'cat' => $cat_id,
                            'posts_per_page' => 1
                        ) ) );

现在，我发现我必须输入var_dump。然后，出现：

array（84）{[“ mts_logo”] =>字符串（0）“” [“ mts_favicon”] =>字符串（0）“” [“ [mts_touch_icon”] =>字符串（0）“” [“ mts_metro_icon” ] =>字符串（0）“” [“ [mts_twitter_username”] =>字符串（0）“” [“ mts_feedburner”] =>字符串（0）“” [“ mts_header_code”] =>字符串（0）“” [“ mts_analytics_code“] =>字符串（0）”“ [” [“ mts_ajax_search”] =>字符串（1）“ 0” [“ mts_sensitive”] =>字符串（1）“ 1” [“ mts_rtl”] =>字符串（1） “ 0” [“ mts_shop_products”] =>字符串（1）“ 9” [“ mts_prefetching”] =>字符串（1）“ 0” [“ mts_lazy_load”] =>字符串（1）“ 0” [“ mts_lazy_load_thumbs”] =>字符串（1）“ 0” [“ mts_lazy_load_content”] =>字符串（1）“ 0” [“ mts_async_js”] =>字符串（1）“ 1” [“ mts_remove_ver_params”] =>字符串（1）“ 1 “ [”“ mts_optimize_wc”] =>字符串（1）“ 1” [“ mts_color_scheme”] =>字符串（7）“＃3fc5a4” [“ mts_layout”] =>字符串（8）“ cslayout” [“ mts_background”] = > array（10）{[“” color“] => string（7）” #ffffff“ [” use“] => string（7）” pattern“ [” image_pattern“] => string（4）” nobg“ [ “ image_upload”] => string（0）“” [“ repeat”] => string（6）“ repeat” [“ attachment”] => string（6）“滚动“ [” position“] =>字符串（8）”左上“ [” size“] =>字符串（5）” cover“ [” gradient“] => array（3）{[” from“] =>字符串（7）“ #ffffff” [“至”] =>字符串（7）“＃000000” [“方向”] =>字符串（10）“水平”} [“视差”] =>字符串（1）“ 0 “} [” mts_custom_css“] =>字符串（0）”“ [”“ mts_lightbox”] =>字符串（1）“ 0” [“ mts_sticky_nav”] =>字符串（1）“ 0” [“ mts_show_primary_nav”] => string（1）“ 1” [“ mts_show_footer_nav”] => string（1）“ 1” [“ mts_header_section2”] => string（1）“ 1” [“ mts_header_bottom_text”] => string（17）“下载我的电子书“” [“ mts_header_bottom_button_text”] =>字符串（20）“立即开始赚钱！” [“ mts_header_bottom_button_link”] =>字符串（1）“＃” [“ mts_banner_show”] =>字符串（1）“ 1” [“ mts_banner_image”] =>字符串（81）“ https://seiscifrasonline.com/wp-content/themes/mts_steadyincome/images/header.jpg” [“ mts_banner_title”] = > string（34）“今天开始赚取稳定收入！” [“ mts_banner_texts”] =>字符串（156）“ Lorem ipsum dolor sit amet，consectetur adipiscing elit。Morbi at nisl lorem，vel porttitor justo。Nunc non mauris elit。Nam enim massa commodo ut placerat。” [“ mts_button_text”] =>字符串（16）“从这里开始” [[mts_banner_button_bg“] =>字符串（7）”＃FF9742“ [” mts_arrow_image“] =>字符串（80）” https://seiscifrasonline.com/wp-content/themes/mts_steadyincome/images/arrow.png“ [[mts_form_image “] =>字符串（80）” https://seiscifrasonline.com/wp-content/themes/mts_steadyincome/images/money.png“ [” mts_ribbon_show“] =>字符串（1）” 1“ [” mts_banner2_show“] =>字符串（1）” 1“ [” mts_social_title“] =>字符串（ 66）“加入我们的在线社区中的100,000多人！” [“ mts_banner_social”] => array（5）{[“ facebook”] => array（5）{[“ group_title”] =>字符串（8）“ Facebook” [“ group_sort”] =>字符串（1）“ 1“ [” mts_banner_icon_title“] =>字符串（8）” Facebook“ [” mts_banner_icon“] =>字符串（8）” facebook“ [” mts_banner_icon_link“] =>字符串（1）”＃“} [” twitter“] => array（5）{[“ group_title”] => string（7）“ Twitter” [“ group_sort”] => string（1）“ 2” [“ mts_banner_icon_title”] => string（7）“ Twitter” [ “ mts_banner_icon”] =>字符串（7）“ twitter” [“ mts_banner_icon_link”] =>字符串（1）“＃”} [“ gplus”] => array（5）{[“” group_title“] =>字符串（11 ）“ Google Plus” [“ group_sort”] =>字符串（1）“ 3” [“ mts_banner_icon_title”] =>字符串（11）“ Google Plus” [“ mts_banner_icon”] =>字符串（11）“ google-plus” [“ mts_banner_icon_link”] =>字符串（1）“＃”} [“ youtube”] =>数组（5）{[“” group_title“] =>字符串（7）” YouTube“ [” group_sort“] =>字符串（ 1）“ 4” [“ mts_banner_icon_title”] =>字符串（7）“ YouTube” [“ mts_banner_icon”] =>字符串（12）“ youtube-play” [“ mts_banner_icon_link”] =>字符串（1）“＃”} [“ rss”] => array（5）{[“ group_title “] =>字符串（3）” RSS“ [” group_sort“] =>字符串（1）” 5“ [” mts_banner_icon_title“] =>字符串（3）” RSS“ [” mts_banner_icon“] =>字符串（3） “ rss” [“ mts_banner_icon_link”] =>字符串（1）“＃”}} [“ mts_books_title”] =>字符串（51）“ John Smith推荐的读物” [[“ mts_books_image”] =>字符串（0）“” [“ mts_more_book_link”] =>字符串（1）“＃” [“ mts_more_book_text”] =>字符串（10）“更多书籍” [“ mts_featured_posts”] =>字符串（1）“ 1” [“ mts_featured_post_cat”] =>字符串（1）“ 1” [“ mts_featured_post_dedup”] =>字符串（1）“ 0” [“ mts_first_footer”] =>字符串（1）“ 0” [“ mts_first_footer_num”] =>字符串（1）“ 4” [ “ mts_footer_slider”] =>字符串（0）“” [“ [mts_copyrights”] =>字符串（73）“ Theme by MyThemeShop” [“ mts_home_post_layout”] =>字符串（8）“ layout-1” [“ mts_full_posts”] => >字符串（1）“ 0” [“ mts_pagenavigation_type”] =>字符串（1）“ 1” [“ mts_home_headline_meta_info”] => array（2）{[“启用”] => array（3）{[“作者” ] =>字符串（11）“作者名称” [“日期”] =>字符串（4）“日期” [“注释”] =>字符串（13）“注释计数”} [“已禁用”] => array（ 0）{} } [“ mts_single_post_layout”] =>字符串（0）“” [“ mts_single_headline_meta_info”] => array（2）{[“” enabled“] => array（4）{[”“ author”] => string（11）“作者名称“ [”日期“] =>字符串（4）”日期“ [”类别“] =>字符串（10）”类别“ [”评论“] =>字符串（13）”评论计数“} [”已禁用“] => array（0）{}} [” mts_breadcrumb“] =>字符串（1）” 1“ [” mts_author_comment“] =>字符串（1）” 1“ [” mts_comment_date“] =>字符串（1） “ 1” [“ mts_home_social_buttons”] =>字符串（1）“ 1” [“ mts_social_button_position”] =>字符串（3）“ top” [“ mts_social_buttons”] => array（2）{[“启用”] => array（5）{[“ facebookshare”] =>字符串（14）“ Facebook Share” [“ facebook”] =>字符串（13）“ Facebook Like” [“ twitter”] =>字符串（7）“ Twitter” [ “ gplus”] =>字符串（11）“ Google Plus” [“ pinterest”] =>字符串（9）“ Pinterest”} [“ disabled”] => array（2）{[“ linkedin”] =>字符串（ 8）“ LinkedIn” [“ stumble”] =>字符串（11）“ StumbleUpon”}} [>“ mts_posttop_adcode”] =>字符串（0）“” [“ mts_posttop_adcode_time”] =>字符串（1）“ 0” [“ mts_postend_adcode“] =>字符串（0）”“ [” mts_postend_ adcode_time“] =>字符串（1）” 0“ [” mts_custom_sidebars“] =>字符串（0）”“ [” mts_sidebar_for_home“] =>字符串（0）”“ [” [mts_sidebar_for_post“] =>字符串（0）” “” [“ mts_sidebar_for_page”] =>字符串（0）“” [“ mts_sidebar_for_archive”] =>字符串（0）“” [“”“ mts_sidebar_for_category”] =>字符串（0）“” [“ ）“” [“ mts_sidebar_for_date”] =>字符串（0）“” [“ mts_sidebar_for_author”] =>字符串（0）“” [“ mts_sidebar_for_search”] =>字符串（0）“” [“ mts_sidebar_for_notfound”] =>字符串（0）“” [“ mts_sidebar_for_shop”] =>字符串（12）“ shop-sidebar” [“ mts_sidebar_for_product”] =>字符串（15）“ product-sidebar” [“ last_tab”] => int（0）}警告：/home2/siilverp/public_html/wp-content/themes/mts_steadyincome/page-home.php中为foreach（）提供的无效参数在第108行

从那里，我不知道该怎么办。请注意，我对编程一无所知，也不知道该向谁求助，所以我来到了这个论坛，希望您能为我提供帮助。

非常感谢。

答案
$ mts_options ['mts_featured_post_cat']是一个字符串。您必须是要使用foreach的对象或数组。

如果始终是一个值，它将起作用：

$cat_id = $mts_options['mts_featured_post_cat']; $featured_query = new WP_Query( apply_filters( 'steadyincome_featured_posts_query', array( 'cat' => $cat_id, 'posts_per_page' => 1 ) ) );

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