[MySqli扩展]⑦--删除用户

更新|
删除

$id = isset($_GET['id']) ? $_GET['id'] : "";

case 'delUser':
    $sql = "DELETE FROM user WHERE id=" . $id;
    $res = $mysqli->query($sql);
    if ($res) {
        $mes = "删除成功";
    } else {
        $mes = "删除失败";
    }
    $url = "test.php";
    echo "";
        exit();
        break;

test.php

connect_errno) {
    die('CONNECT ERROR : ' . $mysqli->connect_error);
}
$sql = "SELECT id,username,age FROM user";
$mysqli_result = $mysqli->query($sql);
if ($mysqli_result && $mysqli_result->num_rows > 0) {
    while ($row = $mysqli_result->fetch_assoc()) {
        $rows[] = $row;
    }
}
?>


    


用户列表-添加用户

    

        
编号
        
用户名
        
年龄
        
操作
    
    
        

            

            

            

            
更新|删除
        
        

doAction.php

connect_errno) {
    die($mysqli->connect_error);
}
$mysqli->set_charset('utf8');
$username = isset($_POST['username']) ? $_POST['username'] : "";
$username = $mysqli->escape_string($username);//转义
$password = isset($_POST['password']) ? md5($_POST['password']) : "";
$age = isset($_POST['age']) ? $_POST['age'] : "";
$act = isset($_GET['act']) ? $_GET['act'] : "";
$id = isset($_GET['id']) ? $_GET['id'] : "";

switch ($act) {
    case "addUser":
        $sql = "INSERT INTO user(username,password,age) VALUES('{$username}','{$password}','{$age}') ";
        $res = $mysqli->query($sql);
        if ($res) {
            $insert_id = $mysqli->insert_id;
            echo "";
        } else {
            echo "";
        }
        break;
    case 'delUser':
        $sql = "DELETE FROM user WHERE id=" . $id;
        $res = $mysqli->query($sql);
        if ($res) {
            $mes = "删除成功";
        } else {
            $mes = "删除失败";
        }
        $url = "test.php";
        echo "";
        exit();
        break;
}

?>

Paste_Image.png

Paste_Image.png