header("content-type:text/html;charset=gb2312");

$conn=mysqli_connect("locallost","root","root","study");

mysqli_set_charset($conn,"utf-8");

if($conn){

switch($_GET["action"]){

case 'add';

$name=$_POST['name'];

$sex=$_POST['sex'];

$age=$_POST['age'];

$class=$_POST['class'];

$sql="insert into stu(name,sex,age,class)values('$name','$sex','$age','$class')";

$rw=mysqli_query($conn,$sql);

if($rw>0){

echo "";

}else{

echo "";

}

header(‘Location:index.php’);

break;

}

}

?>