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我想为我的购物车（我正在做一个电子商务网站）完成过去的交易，只是从教程中尝试。通过过去的交易从数据库中检索数据
我与用户名相比较，如果用户名登录在数据库中，它会显示过去的记录。 否则，它会说没有过去的交易。
但是，我用我的代码完成了 ，如图所示，我可以检索数据库中的项目。 但是，对于每个不同的物品检索，标题“item，package，etcetc”也会重复。 我可以知道如何摆脱标题，我只希望它显示一次作为我的标题。
$des = $row_supermarketcart['productdes'];
$pack = $row_supermarketcart['package'];
$price = $row_supermarketcart['itemprice'];
$qty = $row_supermarketcart['qty'];
$ddate = $row_supermarketcart['ddate'];
if ($row_supermarketcart['username'] == $_SESSION['MM_Username'])
{
echo "<table><tr>";
echo "<td>items</td>";
echo "<td>Package</td>";
echo "<td>Price</td>";
echo "<td>Quantity</td>";
echo "<td>Date of Purchase</td>";
echo "</tr>";
echo "<tr>";
echo "<td>". $des ."</td>";
echo "<td>". $pack. "</td>";
echo "<td>$" .$price. "</td>";
echo "<td>". $qty. "</td>";
echo "<td>".$ddate."</td>";
echo "</tr>";
echo "</table>";
var_dump($row_supermarketcart);
}
else
{
echo "There are nothing in your cart";
}
?>
这是我的全部代码
<?php require_once('Connections/MyDatabase.php'); ?>
<?php
//initialize the session
if (!isset($_SESSION)) {
session_start();
}
// ** Logout the current user. **
$logoutAction = $_SERVER['PHP_SELF']."?doLogout=true";
if ((isset($_SERVER['QUERY_STRING'])) && ($_SERVER['QUERY_STRING'] != "")){
$logoutAction .="&". htmlentities($_SERVER['QUERY_STRING']);
}
if ((isset($_GET['doLogout'])) &&($_GET['doLogout']=="true")){
//to fully log out a visitor we need to clear the session varialbles
$_SESSION['MM_Username'] = NULL;
$_SESSION['MM_UserGroup'] = NULL;
$_SESSION['PrevUrl'] = NULL;
unset($_SESSION['MM_Username']);
unset($_SESSION['MM_UserGroup']);
unset($_SESSION['PrevUrl']);
$logoutGoTo = "login.php";
if ($logoutGoTo) {
header("Location: $logoutGoTo");
exit;
}
}
?>
<?php
if (!function_exists("GetSQLValueString")) {
function GetSQLValueString($theValue, $theType, $theDefinedValue = "", $theNotDefinedValue = "")
{
if (PHP_VERSION < 6) {
$theValue = get_magic_quotes_gpc() ? stripslashes($theValue) : $theValue;
}
$theValue = function_exists("mysql_real_escape_string") ? mysql_real_escape_string($theValue) : mysql_escape_string($theValue);
switch ($theType) {
case "text":
$theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
break;
case "long":
case "int":
$theValue = ($theValue != "") ? intval($theValue) : "NULL";
break;
case "double":
$theValue = ($theValue != "") ? doubleval($theValue) : "NULL";
break;
case "date":
$theValue = ($theValue != "") ? "'" . $theValue . "'" : "NULL";
break;
case "defined":
$theValue = ($theValue != "") ? $theDefinedValue : $theNotDefinedValue;
break;
}
return $theValue;
}
}
mysql_select_db($database_MyDatabase, $MyDatabase);
$query_supermarketcart = "SELECT * FROM supermarketcart";
$supermarketcart = mysql_query($query_supermarketcart, $MyDatabase) or die(mysql_error());
$row_supermarketcart = mysql_fetch_assoc($supermarketcart);
$totalRows_supermarketcart = mysql_num_rows($supermarketcart);
$query_cart = "SELECT * FROM user_data";
$cart = mysql_query($query_cart, $MyDatabase) or die(mysql_error());
$row_cart = mysql_fetch_assoc($cart);
$totalRows_cart = mysql_num_rows($cart);
?>
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Your Past Transaction</title>
</head>
<body background="background.jpg">
<table width="1024" border="0" align="center" cellpadding="5" cellspacing="0" bgcolor="#EBF4FA">
<tr>
<td><img src="logo.png" width="450" height="86" hspace="50">
</td>
<td>
<blockquote><h4><?php echo "Welcome,".($_SESSION['MM_Username']) ?></h4> </blockquote>
<blockquote><img src="cart.png" alt="cart" width="35" border="0" usemap="#Map">
<a href="feedback.php">Feedback</a>
<a href="<?php echo $logoutAction ?>">Logout</a>
</blockquote></td>
</tr>
</table>
<br>
<table width="1024" border="0" align="center" cellpadding="5" cellspacing="0" bgcolor="#EBF4FA">
<tr>
<td>
<?php
do{
$des = $row_supermarketcart['productdes'];
$pack = $row_supermarketcart['package'];
$price = $row_supermarketcart['itemprice'];
$qty = $row_supermarketcart['qty'];
$ddate = $row_supermarketcart['ddate'];
if ($row_supermarketcart['username'] == $_SESSION['MM_Username'])
{
echo "<table><tr>";
echo "<td>items</td>";
echo "<td>Package</td>";
echo "<td>Price</td>";
echo "<td>Quantity</td>";
echo "<td>Date of Purchase</td>";
echo "</tr>";
echo "<tr>";
echo "<td>". $des ."</td>";
echo "<td>". $pack. "</td>";
echo "<td>$" .$price. "</td>";
echo "<td>". $qty. "</td>";
echo "<td>".$ddate."</td>";
echo "</tr>";
echo "</table>";
}
else
{
echo "There are nothing in your cart";
}
} while ($row_supermarketcart = mysql_fetch_assoc($supermarketcart));
?>
</td>
</tr>
</td>
</tr>
</table>
</body>
</html>
使用'的var_dump（$ row_supermarketcart）'来帮助诊断问题。它看起来像你期望的字符串实际上是一个数组。 –
array 'id'=> string'97'（length = 2） 'itemid'=> string'1'（length = 1） 'productdes'=> string'CADBURY BLOCK MILK CHOCOLATE - DAIRY MILK'（length =长度= 4） '包'=>字符串'220g'（长度= 4） 'itemprice'=>字符串'5.20'（长度= 4） 'qty'=>字符串'2'（长度= 1） ' username'=> string'test'（长度= 4） 'ddate'=>字符串'2014年1月17日星期五，13:58:51'（长度= 30） – user3205175
@DigitalChris这就是它说的.. 为什么这样？ 对不起，我对php – user3205175