Question

我有一个购物车显示，用户必须从日历小部件中选择交货日期，然后单击确认按钮。在提交时，订单购物车应与输入的交货日期一起填写。

我使用的代码是：

<?php 
echo "<form action='' name='form1' >"; 

//some disaply codes here 

    echo "Choose the Date of delivery<input type='date' name='date'>"; 


       echo "<input type='submit' class='btn btn-default' name='final_submission' value ='Confirm Order'>"; 
       echo "</form>";  
    ?> 

用于插入的代码是：

<?php 
if (isset($_POST['final_submission'])){ 
        error_reporting(E_ALL); 
        ini_set('display_errors', 1); 

         $IP="my localhost"; 
         $USER="my user name"; 
         $conn=mysqli_connect($IP,$USER,"","my database name"); 
         if (mysqli_connect_errno()) { 
          echo "Failed to connect to MySQL: " . mysqli_connect_error(); 
         } 


$date = stripslashes($_POST['date']); 
$result=mysqli_query($conn, $query); 
$query="select * from cart"; 

while($row = mysqli_fetch_array($result)) { 
    $us_id=$row['user_id']; 
    $pr_id=$row['prod_id']; 
    $qtty=$row['quantity']; 

    $query_insert = "insert into orders(user_id, prod_id, quantity, dt_del) values('.$us_id.', 
    '.$pr_id.', '.$qtty.','.$date.')"; 
    $res_ins=mysqli_query($conn,$query_insert); 
    } 
} 

?>  

订单表不是得到填充。我不能把我的手指放在错误上。 PLZ点出来

编辑：Orders表是越来越poplulated，但德尔日期字段来了空白...请让我知道如何正确地传递日期变量，显然这是问题

Answer 1

我不确定你试图说实话。你的代码块缺乏很多东西。例如：

$query="select * from cart"; 
while($row = mysqli_fetch_array($result)) { 

什么结果？你在哪里定义它们？这是你在那里指定的查询的结果，肯定不会执行它。因此结果将是0并且不会被执行。

另外问题是，这个查询将通过购物车的每一行，这意味着你也会抓住属于你的客户的aint指定的购物车。

所以，你的代码应该是这样

$query="select * from cart"; 
$result = mysqli_query($conn,$query); 
while($row=mysqli_fetch_array($result)){ 
// yadi yadi yadi .. code code code 

编辑

让我尝试propper缩进返工这个送给你。

if (isset($_POST['final_submission'])){ // check if the button is correct 
    // error_reporting(E_ALL);  <-- canceling this out for now 
    // ini_set('display_errors', 1); <-- canceling this out for now 

     $IP="my localhost"; 
     $USER="my user name"; 
     $conn=mysqli_connect($IP,$USER,"","my database name"); 
     if (mysqli_connect_errno()) { 
      echo "Failed to connect to MySQL: " . mysqli_connect_error(); 
    } 

    $date = stripslashes($_POST['date']); 

    if (empty($date) || $date == ''){ 
      echo 'the date is not set, please check if parameter is filled in'; 
    } else { // if it wont pass this point, you wont get an enormous output of unidentified indexes 

     $query="select * from cart"; 
     $result=mysqli_query($conn, $query); 
     while($row = mysqli_fetch_array($result)) { 
      $us_id=$row['user_id']; 
      $pr_id=$row['prod_id']; 
      $qtty=$row['quantity']; 
      $date = stripslashes($_POST['date']); // just to play it safe define it again 

      if (empty($date) || $date == ''){ 
       echo 'something went wrong with the date'; 
      }else{ 
       $query_insert = "insert into orders(user_id, prod_id, quantity, dt_del) values('.$us_id.','.$pr_id.', '.$qtty.','.$date.')"; 
       $res_ins=mysqli_query($conn,$query_insert); 
      } 
     }  
    } 
}