mysqli插入脚本没有错误但没有工作

Question

我更新了我的代码仍然没有插入，我仍然需要帮助:(

$reference=$_POST['reference'];
$description=$_POST['description']; 
$marque=$_POST['marque'];
$quantite=$_POST['quantite'];
$type=$_POST['type']; 
$id_s_equip=88; 
$insert="insert into piece (design_piece, type, marque, qte, id_s_equip,description) VALUES ( ?,?,?,?,?,?)";
$stmt = mysqli_prepare($c, $insert); 
mysqli_stmt_bind_param($stmt,'ssisis',$reference,$marque,$quantite,$type,
$id_s_equip,$description);
mysqli_stmt_execute($stmt); 
print(mysqli_stmt_affected_rows($stmt));