Question

addtomeal.php

<?php
     $hostname="localhost";
     $username="root";
     $password="tiger";


     $dbhandle = \mysqli_connect($hostname, $username, $password) 
  or die("Unable to connect to MySQL");

$select= \mysqli_select_db($dbhandle,"sample")
     or mysqli_error($dbhandle);
 $itemId= \filter_input(\INPUT_GET,'itemId');

 $orderid= \filter_input(\INPUT_GET,'orderid');
 $subtitle= \filter_input(\INPUT_GET,'subtitle');
 $price= \filter_input(\INPUT_GET,'price');
 $quantity= \filter_input(\INPUT_POST,'quantity');
 $tnumber= \filter_input(\INPUT_GET,'tnumber');

 if(!empty(\filter_input(\INPUT_POST,'addtomeal')))
 {
  $sql="insert into addtomeal(orderid,itemId,subtitle,price,quantity,tnumber)values
 (NULL,'$orderid',$subtitle',$price','$quantity','$tnumber')";

/* @var $result type */
 $result= \mysqli_query($dbhandle,$sql) or die(\mysqli_error($dbhandle));
}       

echo "success";
mysqli_close($dbhandle);

项

     <html>
     <head>
     <link rel="stylesheet" type="text/css" href="display.css" >
     <title>Login Page</title>
     <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1"> 

      </head>
      <body>


    <form name="customer" id='c1' method="post" action="cartdb.php">
   <script src="samcheck.js"></script>
    <div id="top">
        <?php session_start(); ?>

        <div id="toplbl">Welcome <?php  echo $_SESSION["name"]?></div>
        <?php session_start(); ?>
      <div id="toplbl1">This is Table Number <?php  echo $_SESSION["tnumber"]?></div>
    </div>

   <div id="d3"><?php echo "$descript1" ; ?> </div>     
    <div id="s3"><?php echo "$subtitle1" ;?> </div>  
    <div id="r3"><?php { echo "$price1" ;} ?> </div> 
    <div id='t3'><?php echo "$title1"; ?> </div>
    <label id="q1">Quantity</label>
    <input type='text' id='q' name='q' value='1'>
    <input type="hidden" name="itemId" value="<?php $itemId1 ?>">
    <input type ='button' name='plus' value='+' id='p' onclick="increase()">
    <input type='button' name='minus' value='-' id='m' onclick="decrease()">
    <input type='button' name='cancel' value='Cancel' id='cancel' onclick="location.href='customersvsoup.php'">
    <input type='submit' name='addtomeal' value='Add to my Meal' id='addtomeal'>


    <?php if($itemId==='oepd1007'){
    echo "<img src='getdesserticecreamimage.php?itemId=oepd1007' alt='image'> ";}
     ?>

    </form>
    </body>
</html>

我收到错误，因为列计数与第1行的值计数不匹配。我已经使用items.php中的echo语句显示所有值到addtomeal.php，这里我只得到数量。我已在items.html页面中指定了这些内容。

Answer 1

这两个变量$price'和$subtitle'

都缺少起始引号

(NULL,'$orderid', $subtitle', $price','$quantity','$tnumber')
                 ^ // there  ^ // there

将其更改为：

(NULL,'$orderid','$subtitle','$price','$quantity','$tnumber')

Answer 2

您的查询中似乎缺少引号：

$sql = "insert into addtomeal (orderid, itemId, subtitle, price, quantity, tnumber) values
(NULL, '$orderid', '$subtitle', '$price', '$quantity', '$tnumber')";

我不知道你的字段的类型，我为所有字段放置了引号，但如果类型是数字，则不需要使用引号。

Answer 3

$ sql =“INSERT INTO addtomeal（orderid，itemId，subtitle，price，quantity，tnumber）VALUES （'$ orderid'，'$ itemid'，'$ subtitle'，'$ price'，'$ quantity'，'$ tnumber'）“;

不要从查询中输入NULL在创建表时从表结构的默认值中输入NULL 我猜你在查询中缺少$ itemid，我在上面的查询中添加了它，并且还删除了NULL

php插入代码中的列值匹配错误

3 个答案: