空白的迴應，當我想顯示postmeta WordPress的

Question

在那裏我想顯示我的數據。當我嘗試不postmeta其工作，以顯示我的數據，但是當我試圖用postmeta改善我得到的空白響應

$command = $_GET['command']; 
switch ($command) { 
    case 'list_product': 

     $loop = new WP_Query( 
       array(
         'post_type' => 'product' 
         // 'showposts' => 4, 
         // 'meta_key'  => '_sale_price', 
         // 'meta_value' => '0', 
         // 'meta_compare' => '>=', 
        ) 
       ); 
if($loop->have_posts()) : 

    $data = array("api_status" => 1, "api_message" => "success"); 
    while ($loop->have_posts()) : $loop->the_post(); 

      $data[] = array("id" => get_the_ID(), 
      "post_name" => get_the_title(), 
      "post_meta" => get_post_meta(get_the_ID()); 

    endwhile; 


    echo json_encode($data); 
break; 
} 

有人幫我什麼改善，我需要在我的代碼，所以我的代碼可以像我需要的那樣工作？

Answer 1

把$data = ...之前你if，並添加一個空數組值給它的results關鍵。把你的echo放在你的endif之後。拼了一下：

在你while，用$data['results'][] = ...

---

編輯添加的結果，這把鑰匙。如果你的結果是空的，那麼其他的是錯誤的。

switch ($_GET['command']) { 
    case 'list_product': 

     $loop = new WP_Query( 
      array(
       'post_type' => 'product', 
       // 'showposts' => 4, 
       // 'meta_key'  => '_sale_price', 
       // 'meta_value' => '0', 
       // 'meta_compare' => '>=', 
      ) 
     ); 
     $data = array(
      'api_status' => 1, 
      'api_message' => 'success', 
      'results' => array(), 
     ); 
     while ($loop->have_posts()) { 
      $loop->the_post(); 
      $data['results'][] = array(
       'id' => get_the_ID(), 
       'post_name' => get_the_title(), 
       'post_meta' => get_post_meta(get_the_ID()), 
      ); 
     } 
     echo json_encode($data); 
     break; 
} 

Answer 2

試試這個：

$command = $_GET['command']; 
switch ($command) { 
    case 'list_product': 

     $loop = new WP_Query(
      array(
       'post_type' => 'product' 
// 'showposts' => 4, 
// 'meta_key'  => '_sale_price', 
// 'meta_value' => '0', 
// 'meta_compare' => '>=', 
      ) 
     ); 

     if($loop->have_posts()) { 

      $data = array("api_status" => 1, "api_message" => "success"); 
      while($loop->have_posts()) { 
       $loop->the_post(); 
       $data[] = array(
        "id" => get_the_ID(), 
        "post_name" => get_the_title(), 
        "post_meta" => get_post_meta(get_the_ID()) 
       ); 
      } 

      /** 
      $data[] = array(
       "id" => get_the_ID(), 
       "post_name" => get_the_title(), 
       "post_meta" => get_post_meta(get_the_ID()) 
      ); 
      */ 

     } 

     echo json_encode($data); 
     break; 
} 

Answer 3

請下面的代碼嘗試：

$loop = new WP_Query(
    array(
     'post_type' => 'post' 
    ) 
); 

$data = array("api_status" => 1, "api_message" => "success"); 
if($loop->have_posts()) { 
while($loop->have_posts()) { 
    $loop->the_post(); 
    $data[] = array(
     "id" => get_the_ID(), 
     "post_name" => get_the_title(), 
     "post_meta" => get_post_meta(get_the_ID()) 
    ); 
} 
} 
echo json_encode($data);