在foreach循环查询之外没有正常工作

Question

这里我试图将数据再次插入数据库新表（包含数量和客户详细信息）。从数据库中获取$grocery_id和$grocery_item值。 $customername，$customermobile，$groqty值是用户将在相应的文本字段中输入详细信息。

执行此代码时$groceryid，$groceryitem） - ＆gt;这两列始终存储最后一行值。因为我把查询放在foreach循环之外。这是我的问题。如果我把查询放在foreach中它可以正常工作。但是，数量值无法正常工作。那么，我如何正确执行查询（在foreach循环之外）？

<?php
    if(isset($_POST['submit']))
    {
        $grocery_id = $rowid;
        $grocery_item = $rowsitem;
        $customername = $_POST['customername'];
        $customermobile = $_POST['customermobile'];
        $groqty = $_POST['groceryquantity'];

        for($i = 0; $i < sizeof($groqty); $i++)
        {
            $groqtys = $groqty[$i];

            foreach($grocery_id as $key => $index_id )
            {           

            }       

            $sql = "INSERT INTO ".customer_order." SET grocery_id = '$index_id' , grocery_item = '$grocery_item[$key]', customername = '$customername', customermobile = '$customermobile', quantity = '$groqtys' ";
            mysql_query($sql,$CN);
            $response = asort_form_ok("Your order successfully submitted. We will deliver you soon.");
        }
    }
?>

Answer 1

考虑到foreach和$grocery_id的索引值相同，您只需使用一个$groqty循环。

尝试：

<?php

if (isset($_POST['submit']))
    {
    $grocery_id = $rowid;
    $grocery_item = $rowsitem;

    // sanitizing your values
    $customername = mysql_real_escape_string($_POST['customername']);
    $customermobile = mysql_real_escape_string($_POST['customermobile']);
    $groqty = array_map('mysql_real_escape_string', $_POST['groceryquantity']);
    foreach($grocery_id as $key => $index_id)
       {
        $sql = "INSERT INTO " . customer_order . " SET grocery_id = '$index_id' , grocery_item = '$grocery_item[$key]', customername = '$customername', customermobile = '$customermobile', quantity = '$groqty[$key]' ";
        mysql_query($sql, $CN);
        $response = asort_form_ok("Your order successfully submitted. We will deliver you soon.");
       }

    }

?>

另请注意：

Please, don't use mysql_* functions in new code。它们不再被维护and are officially deprecated。请参阅red box？转而了解prepared statements，并使用PDO或MySQLi - this article将帮助您确定哪个。如果您选择PDO here is a good tutorial。