将数组值和form的其他from值插入到两个不同的mysql表中

我试图从一个表单插入数据到两个不同的表。这是我正在做的:-

<?php
$mysqli= new mysqli("localhost","root","","store_records");
if($mysqli->connect_error)
    die("Database connection failed ".$mysqli->connect_error);
$query = "insert into bill_details(date,invoice_no,balance) values('".$_POST['p_date']."','".$_POST['invoice_no']."','".$_POST['balance']."')";
if($mysqli->query($query))
{
    $cquery="";
    for ( $i=0;$i<$_POST['row_numbers'];$i++) 
    {
        $cquery .= "insert into bill_records(item_name,qty,pack,batch,expiry,mrp,rate,vat,discount,invoice_no) values('".$_POST['item_name'][$i]."','".$_POST['qty'][$i]."','".$_POST['pack'][$i]."','".$_POST['batch'][$i]."','".$_POST['expiry'][$i]."','".$_POST['mrp'][$i]."','".$_POST['rate'][$i]."','".$_POST['vat'][$i]."','".$_POST['discount'][$i]."','".$_POST['invoice_no']."');";
    }
    if($mysqli->multi_query($cquery))
        echo "Records Saved";
    else
        echo "Failed to save product records";
}
else
{
    echo "Failed To save Records";
}
?>

现在，来自第一个查询的数据被存储到bill_details表中。但是数组值没有被存储。我不知道我做错了我的代码。我想知道如何解决这个问题，并使用invoice_no作为两个表的参考键。

下面是两个数据库表的结构。

bill_details表

bill_records表

Try this. Hope it works. :)
<?php
$mysqli= new mysqli("localhost","root","","store_records");
if($mysqli->connect_error)
die("Database connection failed ".$mysqli->connect_error);
$query = "insert into bill_details(date,invoice_no,balance) values('".$_POST['p_date']."','".$_POST['invoice_no']."','".$_POST['balance']."')";
if($mysqli->query($query))
{
    $cquery="";
    for ( $i=0;$i<$_POST['row_numbers'];$i++) 
    {
        $cquery .= "insert into bill_records(item_name,qty,pack,batch,expiry,mrp,rate,vat,discount,invoice no) values('".$_POST['item_name'][$i]."','".$_POST['qty'][$i]."','".$_POST['pack'][$i]."','".$_POST['batch'][$i]."','".$_POST['expiry'][$i]."','".$_POST['mrp'][$i]."','".$_POST['rate'][$i]."','".$_POST['vat'][$i]."','".$_POST['discount'][$i]."','".$_POST['invoice_no']."');";
        if(!($mysqli->query($cquery)))
            die("failed to save");
    }
}
else{
    echo "Failed To save Records";
}
?>