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数据删除跟重新添加

　　php删除处理页面：

<?php
$code = $_GET["c"];

//造连接对象
$db = new MySQLi("localhost","root","123","mydb");

$sql = "delete from info where code='{$code}'";

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

if($r)
{
header("location:main.php");
}
else
{
echo "删除失败";
}

　　　　添加页面：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
</head>

<body>

<form action="addchuli.php" method="post">
<div>代号：<input type="text" name="code" /></div>
<div>姓名：<input type="text" name="name" /></div>
<div>性别：
<input type="radio" name="sex" value="1" checked="checked" />男
 
<input type="radio" name="sex" value="0" />女
</div>
<div>民族：
<select name="nation">
<?php
//造连接对象
$db = new MySQLi("localhost","root","123","mydb");
$sql = "select * from nation";
$result = $db->query($sql);
$attr = $result->fetch_all();

foreach($attr as $v)
{
echo "<option value='{$v[0]}'>{$v[1]}</option>";
}
?>
</select>
</div>
<div>生日：<input type="text" name="birthday" /></div>

<div><input type="submit" value="添加" /></div>
</form>

</body>
</html>

　　　　添加的处理页面：

<?php
$code = $_POST["code"];
$name = $_POST["name"];
$sex = $_POST["sex"];
$nation = $_POST["nation"];
$birthday = $_POST["birthday"];

//造连接对象
$db = new MySQLi("localhost","root","123","mydb");

$sql = "insert into info values('{$code}','{$name}',{$sex},'{$nation}','{$birthday}')";

$db->query($sql);

header("location:main.php");

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原文地址：https://www.cnblogs.com/chenshanhe/p/6839280.html