增删

        <h1>列表</h1>
<table width="100%" border="1" cellpadding="0" cellspacing="0">
    <tr>
        <td>代号</td>
        <td>名称</td>
        <td>价格</td>
        <td>产地</td>
        <td>库存</td>
        <td>操作</td>
    </tr>




<?php
$db = new MySQLi("localhost","root","112834","test4");

$sql = "select * from hao";

$result = $db->query($sql);

/*$attr = $result->fetch_all();

foreach($attr as $v)
{
    echo "<tr><td>($v[0])</td><td>($v[1])</td><td>($v[2])</td><td>($v[3])</td><td>($v[4])</td></tr>";    
}
*/
while($attr = $result->fetch_row())
{
    echo "<tr><td>($attr[0])</td><td>($attr[1])</td><td>($attr[2])</td><td>($attr[3])</td><td>($attr[4])</td><td><a href='shanchu.php?name={$attr[1]}' onclick="return confirm('确定删除么')">删除</a></td></tr>";    
}


?>
</table>

$name =$_GET["name"];


$db = new MySQLi("localhost","root","112834","test4");


$sql = "delete from hao where name='{$name}'";
$r = $db->query($sql);
if($r)
{
    header("location:biaoge.php");    
}
else
{
    echo "删除失败";    
}

<h1>添加</h1>
<form action="tianjia.php" method="post">
<div>名称 <input type="text" name="name" /></div>
<div>价格 <input type="text" name="price" /></div>
<div>产地 <input type="text" name="chandi" /></div>
<div>库存 <input type="text" name="numbers" /></div>
<div><input type="submit" value="添加" /></div>


</form>

<?php
$name = $_POST["name"];
$price = $_POST["price"];
$chandi = $_POST["chandi"];
$numbers = $_POST["numbers"];


$db = new MySQLi("localhost","root","112834","test4");


$sql = "insert into hao values ('','{$name}','{$price}','{$chandi}',{$numbers})";
$r = $db->query($sql);
if($r)
{
    header("location:biaoge.php");    
}
else
{
    echo "添加失败";    
}
?>