掌握foreach循環從對象stdClass的多個項目

Question

我有我的代碼在這裏用以下方法：

$db = DB::getInstance(); 
$templates = $db->get('templates', array('user_id', '=', 'username')); 
$templates = $templates->results(); 

echo '<pre>', print_r($templates), '</pre>'; 

它返回這樣的：

Array 
(
    [0] => stdClass Object 
     (
      [user_id] => username 
      [template_id] => 2 
      [template_name] => invoice1 
      [template_description] => dear {{customer}}, 

      The {{item}} will cost {{price}}. 
     ) 

    [1] => stdClass Object 
     (
      [user_id] => username 
      [template_id] => 3 
      [template_name] => invoice2 
      [template_description] => Dear {{customer}}, 

      You have selected {{package type}} service. Your {{item}} will cost {{price}}. 
     ) 

我可以成功地從一開始一個 template_description這樣的foreach循環陣列：

foreach($templates[1] as $key=>$value){   
     $value;   
    } 

但是，我有多個 template_descriptions我想得到，我不知道如何。我不熟悉foreach循環和對象。

如果我刪除從「$模板」的號碼，我得到的錯誤：

Fatal error: Cannot use object of type stdClass as array in C:\xampp\htdocs\email\test.php on line 15 

Answer 1

爲什麼你只有一個元素（第二對象）的循環呢？從foreach

foreach($templates[1] as $key=>$value){ 
       ^Wrong way 

刪除[1]這樣做：

foreach($templates as $obj){   
     echo $obj->template_descrption; 
    } 

Answer 2

您只需從你的foreach省略數組鍵，就像這樣：

foreach($templates as $template){   
    echo $template->template_description;   
} 

Answer 3

foreach($templates as $template){ 
     foreach($template as $key=>$value){ 
        echo $value; 
     } 
}