如何在多维数组中获取post数据形式的WP_Query数组？

Question

如何从 object(WP_Query) 中获取 $value 数组值？

post_content、ID、页面名称、类别等

这是我的代码：


    global $post;
    
    $args = array(
        'post_type' => 'history',
        'order'     => 'ASC'
    );
    
    $master = [];
        
    $post_query = new WP_Query($args);
    
    if ($post_query->have_posts() ) {
                
        while ($post_query->have_posts()) {
                
            $post_query->the_post();
            
            /* Get Post Date */
            $year = get_the_date( 'Y' );
            $mon = get_the_date( 'M' );
                
            $master[$year][$mon][] = $post_query;
            
        }
        
        foreach ($master as $masterkey => $mastervalue) {
            echo "<p>";

            echo "masterkey: ".  $masterkey . "<br>";

            foreach($mastervalue as $key => $value) {
                echo "key: " . $key . "<br>";
                echo "value: " . $value . "<br>";
                                        
            }
            
            echo "</p>";
        }
        
    }

wp_reset_postdata();

var_dump 对于 $value 数组：

array(1) { [0]=> object(WP_Query)#2459 (51) { ["query"]=> array(2) { ["post_type"]=> string(7) "history" ["order"]=> string(3) "ASC" } ["query_vars"]=> array(63) { ["post_type"]=> string(7) "history" ["order"]=> string(3) "ASC" ["error"]=> string(0) "" ["m"]=> string(0) "" ["p"]=> int(0) ["post_parent"]=> string(0) "" ["subpost"]=> string(0) "" ["subpost_id"]=> string(0) "" ["attachment"]=> string(0) "" ["attachment_id"]=> int(0) ["name"]=> string(0) "" ["pagename"]=> string(0) "" ["page_id"]=> int(0) ["second"]=> string(0) "" ["minute"]=> string(0) "" ["hour"]=> string(0) "" ["day"]=> int(0) ["monthnum"]=> int(0) ["year"]=> int(0) ["w"]=> int(0) ["category_name"]=> string(0) "" ["tag"]=> string(0) "" ["cat"]=> string(0) "" ["tag_id"]=> string(0) "" ["author"]=> string(0) "" ["author_name"]=> string(0) "" ["feed"]=> string(0) "" ["tb"]=> string(0) "" ["paged"]=> int(0) ["meta_key"]=> string(0) "" ["meta_value"]=> string(0) "" ["preview"]=> string(0) "" ["s"]=> string(0) "" ["sentence"]=> string(0) "" ["title"]=> string(0) "" ["fields"]=> string(0) "" ["menu_order"]=> string(0) "" ["embed"]=> string(0) "" ["category__in"]=> array(0) { } ["category__not_in"]=> array(0) { } ["category__and"]=> array(0) { } ["post__in"]=> array(0) { } ["post__not_in"]=> array(0) { } ["post_name__in"]=> array(0) { } ["tag__in"]=> array(0) { } ["tag__not_in"]=> array(0) { } ["tag__and"]=> array(0) { } ["tag_slug__in"]=> array(0) { } ["tag_slug__and"]=> array(0) { } ["post_parent__in"]=> array(0) { } ["post_parent__not_in"]=> array(0) { } ["author__in"]=> array(0) { } ["author__not_in"]=> array(0) { } ["ignore_sticky_posts"]=> bool(false) ["suppress_filters"]=> bool(false) ["cache_results"]=> bool(true) ["update_post_term_cache"]=> bool(true) ["lazy_load_term_meta"]=> bool(true) ["update_post_meta_cache"]=> bool(true) ["posts_per_page"]=> int(10) ["nopaging"]=> bool(false) ["comments_per_page"]=> string(2) "50" ["no_found_rows"]=> bool(false) } ["tax_query"]=> object(WP_Tax_Query)#2465 (6) { ["queries"]=> array(0) { } ["relation"]=> string(3) "AND" ["table_aliases":protected]=> array(0) { } ["queried_terms"]=> array(0) { } ["primary_table"]=> string(11) "pkctU_posts" ["primary_id_column"]=> string(2) "ID" } ["meta_query"]=> object(WP_Meta_Query)#2452 (9) { ["queries"]=> array(0) { } ["relation"]=> NULL ["meta_table"]=> NULL ["meta_id_column"]=> NULL ["primary_table"]=> NULL ["primary_id_column"]=> NULL ["table_aliases":protected]=> array(0) { } ["clauses":protected]=> array(0) { } ["has_or_relation":protected]=> bool(false) } ["date_query"]=> bool(false) ["request"]=> string(295) "SELECT SQL_CALC_FOUND_ROWS pkctU_posts.ID FROM pkctU_posts WHERE 1=1 AND pkctU_posts.post_type = 'history' AND (pkctU_posts.post_status = 'publish' OR pkctU_posts.post_status = 'acf-disabled' OR pkctU_posts.post_status = 'dp-rewrite-republish') ORDER BY pkctU_posts.post_date ASC LIMIT 0, 10" ["posts"]=> array(8) { [0]=> object(WP_Post)#2458 (24) { ["ID"]=> int(3786) ["post_author"]=> string(1) "1" ["post_date"]=> string(19) "2016-01-24 18:34:38" ["post_date_gmt"]=> string(19) "2016-01-24 15:34:38" ["post_content"]=> string(1937) "
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Answer 1

尝试确保 $master 是一个多维数组，然后再分配 $master[$year][$mon][] = $post_query;

之类的值

while ($post_query->have_posts()) {
                
    $post_query->the_post();
            
    /* Get Post Date */
    $year = get_the_date( 'Y' );
    $mon = get_the_date( 'M' );
    
    if (!is_array($master[$year]) {
        $master[$year] = [];
    }
    if (!is_array($master[$year][$mon]) {
        $master[$year][$mon] = [];
    }
    $master[$year][$mon][] = $post_query;
            
}

Answer 2

如果这个问题与this question of yours相关，而您需要post这种格式的标题Year > Months > Title of each post，那么您可以使用以下代码：

$posts = get_posts(array(
  'post_type' => 'history',
  'posts_per_page' => -1,
  'orderby'   => 'date'
));

$master = [];

foreach ($posts as $post) {
  setup_postdata($post);

  $time = strtotime($post->post_date);
  $year = date('Y', $time);
  $mon = date('F', $time);

  $master[$year][$mon][] = $post->post_title;
}

wp_reset_postdata();


foreach ((array)$master as $yearly => $yvalue) {
  echo $yearly . ": <br>";
  echo "<ul>";
  foreach ($yvalue as $monthly => $mvalue) {
    echo "<li>" . $monthly . ": </li>";
    echo "<ul>";
    foreach ($mvalue as $post_title_k => $post_title_v) {
      echo "<li>" . $post_title_v . "</li>";
    }
    echo "</ul>";
  }
  echo "</ul>";
}

请注意，我使用了 post object 中的 post_title。这将 return 以下输出：

2021:
  January:
    1.Post Title
    2.Post Title
  March:
    3.Post Title

2020:
  May:
    4.Post Title

当您使用 get_posts 时，它将 return post objects。每个 object 包括以下内容：

WP_Post Object
(
    [ID] =>
    [post_author] =>
    [post_date] => 
    [post_date_gmt] => 
    [post_content] => 
    [post_title] => 
    [post_excerpt] => 
    [post_status] =>
    [comment_status] =>
    [ping_status] => 
    [post_password] => 
    [post_name] =>
    [to_ping] => 
    [pinged] => 
    [post_modified] => 
    [post_modified_gmt] =>
    [post_content_filtered] => 
    [post_parent] => 
    [guid] => 
    [menu_order] =>
    [post_type] =>
    [post_mime_type] => 
    [comment_count] =>
    [filter] =>
)

在上面的代码中，我在 $master[$year][$mon][] = $post->post_title.

这一行访问了 $post->post_title

如何在多维数组中获取post数据形式的WP_Query数组？

How to get post data form WP_Query array in multidimensional array?

php

arrays

wordpress

wordpress-theming

custom-wordpress-pages