的ID從數據庫中刪除行

Question

您好我有從DB

刪除數據的問題，這是我的代碼：確認

function confirm_delete_mat(materials_id, materials_header) 
{ 
    if(confirm('Are You Sure you want to delete page:\n' + materials_header + ' ?')) 
    { 
     location.href = '../pages/materials/materials_delete.php?pid=' + materials_id; 
    } 
} 

它會刪除包含這些代碼，調用該函數頁刪除：

$pid = delete_material($materials_id); 

if($pid == false) 
{ 
    die('Problem Deleting Page'); 
} 
else 
{ 
    //header('location: pages_list.php'); 
    die(); 
} 

當然，有一個函數本身：

function delete_material($materials_id) 
{ 
    global $db; 

    try 
    { 
     $sql = "DELETE FROM materials WHERE materials_id = :materials_id LIMIT 1";  
     $stmt = $db->prepare($sql); 

     $stmt->bindParam(':materials_id', $materials_id, PDO::PARAM_INT); 

     return $stmt->execute(); 
    } 
    catch(Exception $e) 
    { 
     return false; 
    } 
} 

顯示來自DB的元素的LOOP。

foreach($materials as $mat_key => $mat_val) 
     { 

      echo '<section class="wrapper_matrls">'; 
      echo '<ul>'; 
      echo '<li>'; 
      echo '<div class="mat_header"> <h3> '.$mat_val['materials_header'].' </h3> </div>'; 
      echo '<p>'; 
      echo '<img src="../../images/'.$mat_val['materials_src'].'" alt="" title="" />'; 
      echo $mat_val['materials_text'];     
      echo '</p>'; 
      echo '</li>'; 
      echo '</ul>'; 
      echo '</section>'; 
      echo $materials_id = $mat_val['materials_id']; 
      echo $materials_header = $mat_val['materials_header']; 
      echo '<a href="javascript:confirm_delete_mat('.$materials_id.', \''.$materials_header.'\')" class="">Delete This page</a>'; 

     } 

我設法新元素添加到表中，但不能將其刪除 任何幫助，請。

感謝

---

插入數據

哦確定 那按鈕

echo '<li><a style="color:#f00" href="../pages/materials/materials_insert.php" onClick="window.location.href=window.location.href ">Add New Page</a></li>'; 

和那一個功能

function insert_materials() 
{ 
    global $db; 

    try 
    { 
     $sql = "INSERT INTO materials 
     ( materials_header, materials_order, materials_src , materials_text) 
     VALUES 
     ('New Header', 1000 , 'gallery/small/1435238385.jpg', 'enter text' )";  

     $stmt = $db->prepare($sql); 

     if($stmt->execute() == false) 
     return false; 
     else 
     return 
     $db->lastInsertId(); 

    } 
    catch(Exception $e) 
    { 
     //ERROR - function returns FALSE 
     return false; 
    } 
} 

Answer 1

你必須到u請從您的刪除頁面上的JavaScript鏈接中獲取GET參數（$ materials_id沒有在那裏設置）：

$pid = delete_material($_GET["pid"]);