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在php中单击链接（来自数据库）后，没有显示任何内容

php html mysql sql database

在php中单击链接（来自数据库）后，没有显示任何内容,php,html,mysql,sql,database,Php,Html,Mysql,Sql,Database,我有一个名为simple\u stall的数据库，其中包含表order\u detail，该表有4列IDNameOrdered\u Item数量…当前用户提交订单后，他们将被重定向到一个名为order\u detail.php…的页面。此页面将显示表中所有订购的项目，标题为ID名称订购的项目数量 现在，当用户从表中单击某人的姓名时，我想将用户重定向到一个名为view\u more.php的新页面，该页面将显示用户订购的项目，但是页面中没有显示任何内容 这是我的代码： index.php <

我有一个名为
simple\u stall
的数据库，其中包含表
order\u detail
，该表有4列
ID
NameOrdered\u Item
数量
…当前用户提交订单后，他们将被重定向到一个名为
order\u detail.php
…的页面。此页面将显示表中所有订购的项目，标题为
ID
名称
订购的项目
数量

现在，当用户从表中单击某人的姓名时，我想将用户重定向到一个名为
view\u more.php
的新页面，该页面将显示用户订购的项目，但是页面中没有显示任何内容

这是我的代码：

index.php


<div class="container">
    <form action="insert_data.php" method="POST">
        <div>
            <input type="text" name="Name" placeholder="Name">
        </div>
        <div>
            <input type="text" name="Order" placeholder="Order">
        </div>
        <div>
            <input type="text" name="Quantity" placeholder="Quantity">
        </div>
        <div>
            <button type="submit" name="submit">Send Order</button>
        </div>
    </form>
</div>



  if (isset($_POST['submit']))
{
    include_once 'dbh.php';

    // Escape user inputs for security
    $name = mysqli_real_escape_string($connection, $_POST['Name']);
    $order = mysqli_real_escape_string($connection, $_POST['Order']);
    $quantity = mysqli_real_escape_string($connection, $_POST['Quantity']);

    // attempt insert query execution
    $sql = "INSERT INTO order_detail (Name, Ordered_Item, Quantity) VALUES ('$name', '$order', '$quantity')";

    if(mysqli_query($connection, $sql))
        header("Location: ./order_detail.php?status=ordered");
    else
        echo "ERROR: Could not able to execute $sql. " . mysqli_error($connection);


    // close connection
    mysqli_close($connection);
} 
else
{
    header("Location: ./index.php?status=failed");
    exit();
}



<body>
 <table>
 <tr>
  <th width="30px">No</th> 
  <th width="30%">Name</th> 
  <th width="30%">Ordered Item</th>
  <th width="50px">Quantity</th>
 </tr>

<?php

include_once 'dbh.php';

$query = "SELECT * FROM order_detail"; //You don't need a ; like you do in SQL
$result = mysqli_query($connection, $query);

echo "<table border = 1px>"; // start a table tag in the HTML

while($row = mysqli_fetch_array($result))
{   
    $name = $row['Name'];
    //Creates a loop to loop through results
    echo  "<tr><td style = 'width:30px;'>" . $row['ID'] . "</td>
               <td style = 'width:30%;'>" . "<a href='view_more.php?id=$name'>" . $row['Name'] . "</td>
               <td style = 'width:30%;'>" . $row['Ordered_Item'] . "</td>
               <td>" . $row['Quantity'] . "</td></tr>";  //$row['index'] the index here is a field name
}

echo "</table>"; //Close the table in HTML

mysqli_close($connection); //Make sure to close out the database connection

?>



if (isset($_POST['Name']))
{
    include_once 'dbh.php';

    $name = $row['Name'];
    $query = "SELECT * FROM order_detail WHERE Name = $name";

    $result = mysqli_query($connection, $query);

    echo "<table border = 1px>"; // start a table tag in the HTML

    while($row = mysqli_fetch_array($result))
    {   
        //Creates a loop to loop through results
        echo  "<tr><td style = 'width:30px;'>" . $row['ID'] . "</td>
                   <td style = 'width:30%;'>" . $row['Name'] . "</td>
                   <td style = 'width:30%;'>" . $row['Ordered_Item'] . "</td>
                   <td>" . $row['Quantity'] . "</td></tr>";  //$row['index'] the index here is a field name
    }

    echo "</table>"; //Close the table in HTML

    mysqli_close($connection);
}



order\u detail.php


<div class="container">
    <form action="insert_data.php" method="POST">
        <div>
            <input type="text" name="Name" placeholder="Name">
        </div>
        <div>
            <input type="text" name="Order" placeholder="Order">
        </div>
        <div>
            <input type="text" name="Quantity" placeholder="Quantity">
        </div>
        <div>
            <button type="submit" name="submit">Send Order</button>
        </div>
    </form>
</div>



  if (isset($_POST['submit']))
{
    include_once 'dbh.php';

    // Escape user inputs for security
    $name = mysqli_real_escape_string($connection, $_POST['Name']);
    $order = mysqli_real_escape_string($connection, $_POST['Order']);
    $quantity = mysqli_real_escape_string($connection, $_POST['Quantity']);

    // attempt insert query execution
    $sql = "INSERT INTO order_detail (Name, Ordered_Item, Quantity) VALUES ('$name', '$order', '$quantity')";

    if(mysqli_query($connection, $sql))
        header("Location: ./order_detail.php?status=ordered");
    else
        echo "ERROR: Could not able to execute $sql. " . mysqli_error($connection);


    // close connection
    mysqli_close($connection);
} 
else
{
    header("Location: ./index.php?status=failed");
    exit();
}



<body>
 <table>
 <tr>
  <th width="30px">No</th> 
  <th width="30%">Name</th> 
  <th width="30%">Ordered Item</th>
  <th width="50px">Quantity</th>
 </tr>

<?php

include_once 'dbh.php';

$query = "SELECT * FROM order_detail"; //You don't need a ; like you do in SQL
$result = mysqli_query($connection, $query);

echo "<table border = 1px>"; // start a table tag in the HTML

while($row = mysqli_fetch_array($result))
{   
    $name = $row['Name'];
    //Creates a loop to loop through results
    echo  "<tr><td style = 'width:30px;'>" . $row['ID'] . "</td>
               <td style = 'width:30%;'>" . "<a href='view_more.php?id=$name'>" . $row['Name'] . "</td>
               <td style = 'width:30%;'>" . $row['Ordered_Item'] . "</td>
               <td>" . $row['Quantity'] . "</td></tr>";  //$row['index'] the index here is a field name
}

echo "</table>"; //Close the table in HTML

mysqli_close($connection); //Make sure to close out the database connection

?>



if (isset($_POST['Name']))
{
    include_once 'dbh.php';

    $name = $row['Name'];
    $query = "SELECT * FROM order_detail WHERE Name = $name";

    $result = mysqli_query($connection, $query);

    echo "<table border = 1px>"; // start a table tag in the HTML

    while($row = mysqli_fetch_array($result))
    {   
        //Creates a loop to loop through results
        echo  "<tr><td style = 'width:30px;'>" . $row['ID'] . "</td>
                   <td style = 'width:30%;'>" . $row['Name'] . "</td>
                   <td style = 'width:30%;'>" . $row['Ordered_Item'] . "</td>
                   <td>" . $row['Quantity'] . "</td></tr>";  //$row['index'] the index here is a field name
    }

    echo "</table>"; //Close the table in HTML

    mysqli_close($connection);
}


它不会显示

因为在
view\u more.php
上你有
if（isset（$\u POST['Name']）
，这永远不会是真的，因为你在
view\u more.php
上没有使用
$\u POST
，你使用的是
。“$row['Name']”。
你使用的是普通链接，所以用这个代码替换它


if (isset($_GET['id']))
{
    include_once 'dbh.php';

    $name = $_GET['id'];
    $query = "SELECT * FROM order_detail WHERE Name = '$name'";

    $result = mysqli_query($connection, $query);

    echo "<table border = 1px>"; // start a table tag in the HTML

    while($row = mysqli_fetch_array($result))
    {   
        //Creates a loop to loop through results
        echo  "<tr><td style = 'width:30px;'>" . $row['ID'] . "</td>
                   <td style = 'width:30%;'>" . $row['Name'] . "</td>
                   <td style = 'width:30%;'>" . $row['Ordered_Item'] . "</td>
                   <td>" . $row['Quantity'] . "</td></tr>";  //$row['index'] the index here is a field name
    }

    echo "</table>"; //Close the table in HTML

    mysqli_close($connection);
}



if（isset（$\u GET['id']））
{
包括_one'dbh.php'；
$name=$_GET['id']；
$query=“从订单详细信息中选择*，其中名称='$Name'；
$result=mysqli\u查询（$connection，$query）；
echo”“；//在HTML中启动一个表标记
while（$row=mysqli\u fetch\u数组（$result））
{   
//创建循环以循环结果
回显“.$row['ID']”
“$row['Name']”
“$row[‘订购的商品’]”。”
“$row['Quantity']”；//$row['index']此处的索引是字段名
}
echo”“；//在HTML中关闭表
mysqli_close（$connection）；
}



您应该很乐意去做，但是，我强烈建议您使用适当的php框架。
在生成指向
查看\u more.php
页面的链接时，您正在注入一个名为
id
的GET参数：


<a href='view_more.php?id=$name'>


把这个固定到


if (isset($_GET['id']))


顺便说一句，你的代码真的很难看。有很多事情做错了：


    

  • SQL查询中未替换的参数：您将面临严重的安全漏洞
    • 

  • 耦合的PHP和HTML脚本：查看和
    • 

嘿，谢谢..但现在显示了
警告：mysqli\u fetch\u array（）希望参数1是mysqli\u结果，在第14行的C:\xampp\htdocs\simple\u stall\view\u more.php中给出布尔值
有什么原因吗？另外，你所说的php框架是什么意思？像
method=post
？返回空白页哦，等等，在
order\u detail.php
中发现错误的代码它可以工作！谢谢~