/* connect database, login using mysqli */

<?php
class class_41e {

    function coonect($host, $userdb, $passdb, $db){
        $conn = mysqli_connect($host, $userdb, $passdb, $db);
        if (mysqli_connect_errno()){
            return "Koneksi database gagal : " . mysqli_connect_error();
        }else{
            return $conn;
        }
    }

    function login($connect, $username, $password){
        $query = mysqli_query($connect, "SELECT * from admin WHERE username='$username'");
        $find = mysqli_num_rows($query);
        if($find > 0){
            $result = mysqli_fetch_array($query, MYSQLI_ASSOC);
            /*
                tambah password
                $password = 'passsword';
                $pass = password_hash($password, PASSWORD_DEFAULT);

            */

            if (password_verify($password, $result['password'])) {
                return $result;
            }else{
                return false;
            }
        }else{
            return false;
        }
    }
}

if (isset($_POST['submit'])) {
    $username = $_POST['username'];
    $password = $_POST['password'];

    $db = new class_41e();
    $connect = $db->coonect('localhost', 'root', 'passdb', 'db');
    $result = $db->login($connect, $username, $password);
    if ($result != false) {
        //berhasil login
        print_r($result);
    }else{
        echo 'exit';
    }

}else{ ?>
    <form action="" method="post">
        <input type="text" name="username" placeholder="masukin username"><br>
        <input type="password" name="password" placeholder="masukin password"><br>
        <input type="submit" name="submit" value="masuk">
    </form>
<?php } ?>