我遇到的问题是：
注意：未定义的变量：第321行的C：\ xampp \ htdocs \ osms \ ViewProduct.php中的价格
此代码：$Price=$i['price'];。你能帮我解决这个问题吗，我错过了什么，我应该添加什么？变量undefined。
<?php
session_start();
?>
<?php
if($_SESSION){
$userid =$_SESSION["Id"];
$IDBranch=$_SESSION["IDBranch"];
$role=$_SESSION["role"];
$mysqli = new mysqli("localhost", "root", "", "hellophones");
include 'Config/config.php';
include 'Config/config1.php';
include 'Config/connect.php';
?>
<!DOCTYPE html>
<!--[if IE 8]> <html lang="en" class="ie8"> <![endif]-->
<!--[if IE 9]> <html lang="en" class="ie9"> <![endif]-->
<!--[if !IE]><!--> <html lang="en"> <!--<![endif]-->
<!-- BEGIN HEAD -->
<head>
<meta charset="UTF-8" />
<title>OSMS | View Product</title>
<meta content="width=device-width, initial-scale=1.0" name="viewport" />
<meta content="" name="description" />
<meta content="" name="author" />
<!--[if IE]>
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<![endif]-->
<!-- GLOBAL STYLES -->
<!-- GLOBAL STYLES -->
<link rel="stylesheet" href="assets/css/bootstrap-fileupload.min.css" />
<link rel="stylesheet" href="assets/plugins/bootstrap/css/bootstrap.css" />
<link rel="stylesheet" href="assets/css/main.css" />
<link rel="stylesheet" href="assets/css/theme.css" />
<link rel="stylesheet" href="assets/css/MoneAdmin.css" />
<link rel="stylesheet" href="assets/plugins/Font-Awesome/css/font-awesome.css" />
<!--END GLOBAL STYLES -->
<!-- PAGE LEVEL STYLES -->
<link href="assets/plugins/dataTables/dataTables.bootstrap.css" rel="stylesheet" />
<!-- END PAGE LEVEL STYLES -->
<!-- HTML5 shim and Respond.js IE8 support of HTML5 elements and media queries -->
<!--[if lt IE 9]>
<script src="https://oss.maxcdn.com/libs/html5shiv/3.7.0/html5shiv.js"></script>
<script src="https://oss.maxcdn.com/libs/respond.js/1.3.0/respond.min.js"></script>
<![endif]-->
</head>
<!-- END HEAD -->
<!-- BEGIN BODY -->
<body class="padTop53 " >
<!-- MAIN WRAPPER -->
<div id="wrap">
<!-- HEADER SECTION -->
<div id="top">
<nav class="navbar navbar-inverse navbar-fixed-top " style="padding-top: 10px;">
<a data-original-title="Show/Hide Menu" data-placement="bottom" data-tooltip="tooltip" class="accordion-toggle btn btn-primary btn-sm visible-xs" data-toggle="collapse" href="#menu" id="menu-toggle">
<i class="icon-align-justify"></i>
</a>
<!-- LOGO SECTION -->
<header class="navbar-header">
<a href="index.html" class="navbar-brand">
<img src="assets/img/logo.png" alt="" /></a>
</header>
<!-- END LOGO SECTION -->
<ul class="nav navbar-top-links navbar-right">
<!--ADMIN SETTINGS SECTIONS -->
<li class="dropdown">
<a class="dropdown-toggle" data-toggle="dropdown" href="#">
<i class="icon-user "></i> <i class="icon-chevron-down "></i>
</a>
<ul class="dropdown-menu dropdown-user">
<li><a href="UserProfile.php"><i class="icon-user"></i> My Profile </a>
</li>
<?php
if($role=="Manager")
{
?>
<li><a href="Settings.php"><i class="icon-gear"></i> Settings </a>
</li>
<?php }?>
<li class="divider"></li>
<li><a href="Execute/ExDestroySession.php"><i class="icon-signout"></i> Logout </a>
</li>
</ul>
</li>
<!--END ADMIN SETTINGS -->
</ul>
</nav>
</div>
<!-- END HEADER SECTION -->
<!-- MENU SECTION -->
<div id="left" >
<div class="media user-media well-small">
<a class="user-link" href="#">
<img class="media-object img-thumbnail user-img" alt="User Picture" src="assets/img/Profile_Uploaded/<?php echo $_SESSION["profilepicture"] ?>" / style="width:64px; height:64px">
</a>
<br />
<div class="media-body">
<h5 class="media-heading"> <?php echo $_SESSION["name"] ?></h5>
<ul class="list-unstyled user-info">
<li>
<a class="btn btn-success btn-xs btn-circle" style="width: 10px;height: 12px;"></a> <?php echo $_SESSION["role"] ?>
</li>
</ul>
</div>
<br />
</div>
<ul id="menu" class="collapse">
<li class="panel">
<a href="dashboard.php" >
<i class="icon-table"></i> Dashboard
</a>
</li>
<li class="panel active">
<a href="#" data-parent="#menu" data-toggle="collapse" class="accordion-toggle" data-target="#Product">
<i class="icon-list-alt"></i> Product
<span class="pull-right">
<i class="icon-angle-left"></i>
</span>
<span class="label label-success">2</span>
</a>
<ul class="in" id="Product">
<li class=""><a href="AddNewProduct.php"><i class="icon-angle-right"></i> Add Product </a></li>
<li class=""><a href="ViewProduct.php"><i class="icon-angle-right"></i> View Product </a></li>
</ul>
</li>
<?php
if($role=="Manager")
{
?>
<li class="panel">
<a href="#" data-parent="#menu" data-toggle="collapse" class="accordion-toggle" data-target="#Purchase">
<i class="icon-pencil"></i> Purchase
<span class="pull-right">
<i class="icon-angle-left"></i>
</span>
<span class="label label-warning">2</span>
</a>
<ul class="collapse" id="Purchase">
<li class=""><a href="ViewProductToPurchase.php"><i class="icon-angle-right"></i> Add Purchase </a></li>
<li class=""><a href="ViewPurchase.php"><i class="icon-angle-right"></i> View Purchase </a></li>
</ul>
</li>
<?php } ?>
<li class="panel">
<a href="#" data-parent="#menu" data-toggle="collapse" class="accordion-toggle" data-target="#Sales">
<i class="icon-shopping-cart"></i> Sales
<span class="pull-right">
<i class="icon-angle-left"></i>
</span>
<span class="label label-info">2</span>
</a>
<ul class="collapse" id="Sales">
<li><a href="ViewProductToSale.php"><i class="icon-angle-right"></i> Add Sales </a></li>
<li><a href="ViewSales.php"><i class="icon-angle-right"></i> View Sales </a></li>
</ul>
</li>
<li><a href="ViewInvoice.php"><i class="icon-list "></i> Invoice </a></li>
<li><a href="gallery.php"><i class="icon-picture"></i> Gallery </a></li>
<?php
if($role=="Manager")
{
?>
<li><a href="Settings.php"><i class="icon-cogs"></i> Settings </a></li>
<li class="panel">
<a href="#" data-parent="#menu" data-toggle="collapse" class="accordion-toggle" data-target="#Users">
<i class="icon-user"></i> Users
<span class="pull-right">
<i class="icon-angle-left"></i>
</span>
<span class="label label-success">2</span>
</a>
<ul class="collapse" id="Users">
<li><a href="AddNewUser.php"><i class="icon-angle-right"></i> Add User </a></li>
<li><a href="ViewUser.php"><i class="icon-angle-right"></i> View User </a></li>
</ul>
</li>
<?php } ?>
<li><a href="Execute/ExDestroySession.php"><i class="icon-signin"></i> Login Page </a></li>
</ul>
</div>
<!--END MENU SECTION -->
<!--PAGE CONTENT -->
<div id="content">
<div class="inner">
<div class="row">
<div class="col-lg-12">
<h2> View Product </h2>
</div>
</div>
<hr />
<div class="row">
<div class="col-lg-12">
<div class="panel panel-default">
<div class="panel-heading">
Details Info about Product
</div>
<div class="panel-body">
<div class="table-responsive">
<table class="table table-striped table-bordered table-hover" id="dataTables-example">
<thead>
<tr>
<th>ID</th>
<th>Product Name</th>
<th>Brand Name</th>
<th>Purchasing Price</th>
<th>Quantity</th>
<th>Total Price</th>
<th>Selling Price</th>
<th>Action</th>
</tr>
</thead>
<tbody>
<?php
if($role=="Manager")
{
//$idd=$_SESSION["CName"];
$query= $dbo->query("SELECT * FROM product ORDER by productid DESC");
foreach ($query as $product) {
?>
<tr class="odd gradeX">
<td><?php echo $product['productid'];?></td>
<td><?php echo $product['product_name'];?></td>
<td><?php echo $product['brand'];?></td>
<td><?php echo $product['price'];?></td>
<td class="center"><?php echo $product['quantity'];?></td>
<td class="center"><?php echo $product['TotalPrice'];?></td>
<td>
<?php
$IDProduct=$product['productid'];
$quer= mysqli_query("SELECT DISTINCT Price FROM price where IDProduct='$IDProduct'");
while($i = mysqli_fetch_array($quer))
{
$Price=$i['Price'];
}
?>
<?php echo $Price;?>
</td>
<td class="center">
<button class="btn" data-toggle="modal" data-target="#NewInvoiceNumber"><i class="icon-eye-open"></i> </button>
<button class="btn btn-danger"><i class="icon-remove icon-white"></i> </button>
</td>
</tr>
<?php } }
else
{
//$idd=$_SESSION["CName"];
$query= $dbo->query("SELECT * FROM product WHERE IDBranch='$IDBranch' ORDER by productid DESC");
foreach ($query as $product) {
?>
<tr class="odd gradeX">
<td><?php echo $product['productid'];?></td>
<td><?php echo $product['product_name'];?></td>
<td><?php echo $product['brand'];?></td>
<td><?php echo $product['price'];?></td>
<td class="center"><?php echo $product['quantity'];?></td>
<td class="center"><?php echo $product['TotalPrice'];?></td>
<td>
<?php
$IDProduct=$product['productid'];
$quer= mysqli_query($mysqli, "SELECT DISTINCT price FROM price where IDProduct='$IDProduct'");
while($i = mysqli_fetch_array($quer))
{
$Price=$i['price'];
}
?>
<?php echo $Price;?>
</td>
<td class="center">
<button class="btn" data-toggle="modal" data-target="#NewInvoiceNumber"><i class="icon-eye-open"></i> </button>
<button class="btn btn-danger"><i class="icon-remove icon-white"></i> </button>
</td>
</tr>
<?php } }?>
</tbody>
</table>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
<!--END PAGE CONTENT -->
</div>
<!--END MAIN WRAPPER -->
<div class="col-lg-12">
<div class="modal fade" id="NewInvoiceNumber" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">
<div class="modal-dialog" style="width:500px">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>
<h4 class="modal-title" id="H4"> Add New Invoice Number</h4>
</div>
<div class="modal-body">
<form role="form" action="" method="post">
<div class="form-group">
<label>The Current Invoice Number</label>
<input type="text" name="InvoiceNumber" class="form-control" value="" readonly />
</div>
<div class="form-group">
<label>Product Name</label>
<input type="text" id="ProductName" name="ProductName" class="form-control" />
</div>
<div class="form-group">
<label class="">Brand Name</label>
<input type="text" id="BrandName" name="BrandName" class="form-control" />
</div>
<div class="form-group">
<label class=""> Purchasing Price</label>
<input type="text" id="ProductPrice" name="ProductPrice" class="form-control" />
</div>
<div class="form-group">
<label class=""> Quantity</label>
<input type="text" id="Quantity" name="Quantity" class="form-control" />
</div>
<div class="form-group">
<label class=""> Total Price</label>
<input type="text" id="TotalPrice" name="TotalPrice" class="form-control" readonly />
</div>
<div class="form-group">
<label class="">Display Size</label>
<input type="text" id="DisplaySize" name="DisplaySize" class="form-control" />
</div>
<div class="form-group">
<label class="">Operating System</label>
<input type="text" id="OperatingSystem" name="OperatingSystem" class="form-control" />
</div>
<div class="form-group">
<label class="">Processor</label>
<input type="text" id="Processor" name="Processor" class="form-control" />
</div>
<div class="form-group">
<label class="">Internal Memory </label>
<input type="text" id="InternalMemory" name="InternalMemory" class="form-control" />
</div>
<div class="form-group">
<label class="">RAM</label>
<input type="text" id="RAM" name="RAM" class="form-control" />
</div>
<div class="form-group">
<label class="">Camera Description</label>
<input type="text" id="CameraDescription" name="CameraDescription" class="form-control" />
</div>
<div class="form-group">
<label class="">Battery Life</label>
<input type="text" id="BatteryLife" name="BatteryLife" class="form-control" />
</div>
<div class="form-group">
<label class="">Weight</label>
<input type="text" id="Weight" name="Weight" class="form-control" />
</div>
<div class="form-group">
<label class="">Model</label>
<input type="text" id="Model" name="Model" class="form-control" />
</div>
<div class="form-group">
<label class="">Dimension</label>
<input type="text" id="Dimension" name="Dimension" class="form-control" />
</div>
<div class="form-group">
<label class="">ASIN</label>
<input type="text" id="ASIN" name="ASIN" class="form-control" />
</div>
<div class="form-group">
<label class="">Product Image</label>
<div class="fileupload fileupload-new" data-provides="fileupload">
<div class="fileupload-new thumbnail" style="width: 200px; height: 150px;"><img src="assets/img/demoUpload.jpg" alt="" /></div>
<div class="fileupload-preview fileupload-exists thumbnail" style="max-width: 200px; max-height: 150px; line-height: 20px;"></div>
<div>
<span class="btn btn-file btn-primary"><span class="fileupload-new">Select image</span><span class="fileupload-exists">Change</span><input type="file" name="ProductImage" /></span>
<a href="#" class="btn btn-danger fileupload-exists" data-dismiss="fileupload">Remove</a>
</div>
</div>
</div>
<div class="form-group">
<label class="">Date</label>
<input type="date" id="date2" name="date2" class="form-control" />
</div>
<div class="form-group">
<label class="control-label ">Description</label>
<div class="">
<textarea id="wysihtml5" class="form-control" rows="10" name="Description"></textarea>
</div>
</div>
<button type="submit" name="SaveInvoice" class="btn btn-primary">Save</button>
<button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
</form>
</div>
</div>
</div>
</div>
</div>
</div>
<!-- FOOTER -->
<?php
include 'Footer.php';
?>
<!--END FOOTER -->
<!-- GLOBAL SCRIPTS -->
<script src="assets/plugins/jquery-2.0.3.min.js"></script>
<script src="assets/plugins/bootstrap/js/bootstrap.min.js"></script>
<script src="assets/plugins/modernizr-2.6.2-respond-1.1.0.min.js"></script>
<!-- END GLOBAL SCRIPTS -->
<!-- PAGE LEVEL SCRIPTS -->
<script src="assets/plugins/dataTables/jquery.dataTables.js"></script>
<script src="assets/plugins/dataTables/dataTables.bootstrap.js"></script>
<script>
$(document).ready(function () {
$('#dataTables-example').dataTable();
});
</script>
<script src="assets/plugins/wysihtml5/lib/js/wysihtml5-0.3.0.js"></script>
<script src="assets/plugins/bootstrap-wysihtml5-hack.js"></script>
<script src="assets/plugins/CLEditor1_4_3/jquery.cleditor.min.js"></script>
<script src="assets/plugins/pagedown/Markdown.Converter.js"></script>
<script src="assets/plugins/pagedown/Markdown.Sanitizer.js"></script>
<script src="assets/plugins/Markdown.Editor-hack.js"></script>
<script src="assets/plugins/jasny/js/bootstrap-inputmask.js"></script>
<script src="assets/js/editorInit.js"></script>
<script>
$(function () { formWysiwyg(); });
</script>
<!-- END PAGE LEVEL SCRIPTS -->
</body>
<!-- END BODY -->
</html>
<?php
}
else{
echo "<script>location.href='index.php'</script>";
} ?>