Foreach PHP循環到數組

Question

我想創建一個包含SQL表結果的數組。但我的foreach循環似乎沒有正確的功能。

這是我的代碼： $ stmt-> bind_param（「i」，$ id）; $ stmt-> execute（）; （$ stmt-> fetch（））{ } $ stmt-> close（）;

$i = 0; 
    foreach ($connected_items as &$value) { 
      print_r ($connected_items[$i]); 
      $stmt->bind_param("i", $connected_items[$i]); 
      $stmt->execute(); 
      while ($stmt->fetch()) { 
       $result[] = array(, 
         ); 
      } 
      $stmt->close(); 

      $i++; 
      } 
    unset($value); 
    ) 
) 

這似乎是運行在for循環在我的打印語句，然後MySQL的語句，使用最後connected_items_id，這是爲什麼？爲什麼它不返回該ID的關聯值？

Answer 1

刪除此[]在行號6：

while ($stmt->fetch()) { 
    $connected_items = array($connected_items_id); 
} 

取而代之：

while ($stmt->fetch()) { 
    $connected_items[] = array($connected_items_id); 
} 

Answer 2

嘗試

foreach ($connected_items as $value) { 
...................... 
...................... 
$stmt = $this->db->prepare('SELECT name, serial FROM `glpi_monitors` WHERE id =?'); 
$stmt->bind_param("i", $value[0]); 
................................ 
................................ 
} 

你也可以用它代替循環，每次查詢IN關鍵字。

$sql = "SELECT name, serial FROM `glpi_monitors` WHERE id IN('".implode("','",$connected_items)."'"); 
$stmt = $this->db->prepare($sql); 

例如：

Answer 3

嘗試此，

"connected_item_id" => $connected_items[0], 

代替

"connected_item_id" => $connected_items_id,