php / pdo / mysql从html表中的select *访问所选行
[英]php/pdo/mysql accessing selected row from a select * in html table
问题描述
I'm building a website with a light back-office order management system. 
我正在建立一个带有轻型后台订单管理系统的网站。 I am encountering a technical difficulty as I'm still in the php learning process. 我遇到了技术难题，因为我还在学习PHP的过程中。 I have a php menu which launches different scripts and this one (waiting_orders.php) displays waiting orders in a html table. 我有一个启动不同脚本的php菜单，这个（waiting_orders.php）在html表中显示等待命令。 By clicking on the order primary key stored in a button, the user should be able to browse the order details with order_detail.php (join client table and so on). 通过单击存储在按钮中的订单主键，用户应该能够使用order_detail.php（加入客户端表等）浏览订单详细信息。 The two scripts execute fine but order_detail.php doesn't show expected result. 这两个脚本执行正常，但order_detail.php没有显示预期的结果。
waiting_orders.php waiting_orders.php
<?php
session_start();
if(isset($_POST['detail']))
{ header('Location: order_detail.php'); }
?>
<!DOCTYPE html>
all html stuff
<?php // all db connexion stuff
$status = "waiting";
$select = $connexion -> prepare("SELECT orderID,order_date,order_qty,order_amount
FROM Orders WHERE status = '$status'"
);
$select->execute();
$result = $select->fetchall();
echo '<table cellpadding="0" cellspacing="0" class="db-table">';
echo '<tr><th>Order no</th><th>Date</th><th>Quantity</th><th>Amount</th></tr>';
foreach($result as $row)
{
$_SESSION['order_key'] = $row['orderID']; // orderID is the primary key
echo '<tr>';
echo '<form method="post" action=""><td><button class="btn btn-danger bold" type="submit" name="detail" value="'.$_SESSION['order_key'].'">'.$row['cmdID'].'</button></td></form>';
echo '<td>',$row['order_date'],'</td>';
echo '<td>',$row['order_qty'],'</td>';
echo '<td>',$row['order_amount'],'</td>';
echo '</tr>';
}
echo '</table>';
?>
order_detail.php order_detail.php
<?php
session_start();
$select_key = $_SESSION['order_key'] ;
?>
<!DOCTYPE html>
all html stuff
<?php // all db connexion stuff
$select = $connexion -> prepare(
"SELECT * FROM Orders WHERE orderID = '$select_key'"
);
As you may guess, order_detail.php always displays last row and not the current orderID selected by the user. 您可能猜到，order_detail.php始终显示最后一行，而不是用户选择的当前orderID。 I tried using an array but without success as I don't really see how to handle it. 我尝试使用数组但没有成功，因为我没有真正看到如何处理它。 Thanks. 谢谢。
1 个解决方案
解决方案1
0 已采纳 2016-05-24 08:12:18
In your code, you are storing the orderID into $_SESSION['order_key'] and then using the $_SESSION variable to output the orderID in the form. 在您的代码中，您将orderID存储到$_SESSION['order_key'] ，然后使用$_SESSION变量在表单中输出orderID。
Try this. 尝试这个。
waiting_orders.php waiting_orders.php
<?php
session_start();
?>
<!DOCTYPE html>
all html stuff
<?php // all db connexion stuff
$status = "waiting";
$select = $connexion -> prepare("SELECT orderID,order_date,order_qty,order_amount
FROM Orders WHERE status = '$status'"
);
$select->execute();
$result = $select->fetchall();
echo '<table cellpadding="0" cellspacing="0" class="db-table">';
echo '<tr><th>Order no</th><th>Date</th><th>Quantity</th><th>Amount</th></tr>';
foreach($result as $row)
{
$_SESSION['order_key'] = $row['orderID']; // orderID is the primary key
echo '<tr>';
echo '<form method="post" action="order_detail.php'"><td><button class="btn btn-danger bold" type="submit" name="detail" value="'.$row['orderID'].'">'.$row['cmdID'].'</button></td></form>';
echo '<td>',$row['order_date'],'</td>';
echo '<td>',$row['order_qty'],'</td>';
echo '<td>',$row['order_amount'],'</td>';
echo '</tr>';
}
echo '</table>';
?>
order_detail.php order_detail.php
<?php
session_start();
$select_key = $_POST['detail'];
/*
You can also set the $_SESSION variable here if it is needed elsewhere
*/
// $_SESSION['order_key'] = $_POST['detail'];
?>
<!DOCTYPE html>
all html stuff
<?php // all db connexion stuff
$select = $connexion -> prepare(
"SELECT * FROM Orders WHERE orderID = '$select_key'"
);
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