Tidak bisa login di pc lain atau browser yang berbeda dengan username dan password yang sama

saat login buat role baru, misal pas login insert ke table is_login = true, saat logout ganti jadi false, saat login di pc lain, check apakah is_login itu true atau false, jika is_login nya true, berarti gk bisa login di pc lain

<pre> // cuma contoh ya, habisnya ane gk tau kodingan agan kaya gimane // biasanya pas mau login di cek dulu apakah si username ama si password itu ada di table user atau gk + dia udh login atau blom $query = mysqli_query($koneksi, "SELECT * from user where username = $username AND password =$password AND login_status=0"); if($query-&gt;num_rows &gt; 0){ // jika data ada; // kodingan buat session // disini tambahin update login_status ke table $query = mysqli_query($koneksi, "UPDATE users set login_status=1 where username = '$username' and password = '$password'"); }else{ // redirect biasanya } </pre>

<pre> &lt;?php session_start(); include'../../model/db_connection.php';

$username = mysql_real_escape_string(trim($_POST['username']));
$password = mysql_real_escape_string(trim($_POST['password']));

$result = mysql_query("select * from userlogin where username = '{$username}'", $db_local);
$row = mysql_fetch_array($result);	
$jml = mysql_num_rows($result);
$id_user = $row['id'];
$statusnya = $row['aktif'];	
$nama = $row['nama'];
$lastlogin = $row['lastlogin'];
$hakakses = $row['hakakses'];
$grup = $row['grup'];

$ip = getRealIpAddr();

function getRealIpAddr()
{
	if (!empty($_SERVER['HTTP_CLIENT_IP']))   //check ip from share internet
	{
	  $ip=$_SERVER['HTTP_CLIENT_IP'];
	}
	elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR']))   //to check ip is pass from proxy
	{
	  $ip=$_SERVER['HTTP_X_FORWARDED_FOR'];
	}
	else
	{
	  $ip=$_SERVER['REMOTE_ADDR'];
	}
	return $ip;
}

	
if ( $password == $row['password'] && $password != " " && !empty($password))
{			
    $today = date("Y-m-d H:i:s");
	$login_us = $user;
	$hak_akses = $akses_groups;
	$_SESSION['id_s'] = $id_user;
	$_SESSION['user_s'] = $username;		
	$_SESSION['nama_s'] = $nama;
	$_SESSION['lastlogin_s'] = $lastlogin;
	$_SESSION['hakakses_s'] = $hakakses;
	$_SESSION['status_s'] = 1;
	$_SESSION['LAST_ACTIVITY_s'] = time();
	$session_id = md5(round(microtime(true)));
	$_SESSION['sess_id'] = $session_id;
	//query update data user
	//mysql_unbuffered_query("UPDATE userlogin SET status=1, lastlogin='$today', lastactivity = '$today' WHERE id=$id_user", $db_local);
	
	if($row['status'] == "1"){
		mysql_query("UPDATE userlogin_history SET wkt_out='$today', ket='reLogin' WHERE session_id='".$row['session_id']."' and session_id is not null");
	}
	
	
	mysql_unbuffered_query("INSERT INTO userlogin_history (session_id,user,ip,tanggal) VALUES ('$session_id','$username','$ip','$today')", $db_local);
	//fifo
	if(1)
	{
		//query sequensial sekarang,berdasarkan alokasi urutan
		$query_fifo = "SELECT max(`alokasi_urutan`) max FROM userlogin WHERE grup = '$grup' AND status = 1 ";
		$eksekusi_fifo = mysql_query($query_fifo, $db_local);
		if(mysql_num_rows($eksekusi_fifo))
		{
			while($data_fifo = mysql_fetch_array($eksekusi_fifo, MYSQL_ASSOC))
			{
				$max_number = $data_fifo['max'];
				$max_number_current = $max_number + 1;
			}
		}
		else
		{
			$max_number_current = 1;
		}
		mysql_unbuffered_query("UPDATE userlogin SET status=1, lastlogin='$today', lastactivity = '$today', alokasi_urutan = '$max_number_current', session_id='$session_id' WHERE id=$id_user", $db_local);
	}
	//echo "UPDATE userlogin SET status=1, lastlogin='$today' WHERE id=$id_user";
	//session_register('$username');
	//print_r($_SESSION);
	//header("location:../dashboard/netbro2.php");	
	//header("location:../dashboard/netbro.php");
	header("location:../../view/dashboard/dashboard.php");
			
}
elseif( $statusnya != '1')
{
	echo "<script>alert('I'm Sorry !! Contact Administrator');
	history.go(-1);
	</script>";
}
else {
	echo "<script>alert('Login Failed...Please Cek Your Username and Password');
	history.go(-1);
	</script>";
}

?&gt; </pre>

<pre> if ( $password == $row['password'] && $password != " " && !empty($password)) </pre> harusnya ditambahin lagi jadi <pre> if ( $password == $row['password'] && $password != " " && !empty($password) && $row['status'] == 0) </pre> jadi si user status loginnya harus 0 (sedang tidak login) agar bisa login

Kalo udh selesai baca bacanya coba liet <a href='https://github.com/hendri18/Very-Simple-Login-PHP-Cookies/blob/master/index.php'>ini</a> , itu ane yg buat, kalo ada yg gk ngerti comment ajh