session_start(): Cannot start session when headers already sent in

<html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <title>Login | Web Galeri Foto</title> <link rel="stylesheet" type="text/css" href="css/style.css"> </head> <body id="bg-login"> <div class="box-login"> <h2>Login</h2> <form action="" method="POST"> <input type="text" name="user" placeholder="Username" class="input-control"> <input type="password" name="pass" placeholder="Password" class="input-control"> <input type="submit" name="submit" value="Login" class="btn"> </form> <?php include 'db.php'; if(isset($_POST['submit'])){ session_start(); $user = mysqli_real_escape_string($conn, $_POST['user']); $pass = mysqli_real_escape_string($conn, $_POST['pass']); $cek = mysqli_query($conn, "SELECT * FROM tb_admin WHERE username = '".$user."'AND password = '".$pass."'"); if(mysqli_num_rows($cek) > 0){ $d = mysqli_fetch_object($cek); $_SESSION['status_login'] = true; $_SESSION['a_global'] = $d; $_SESSION['id'] = $d->admin_id; echo '<script>window.location="dashboard.php"</script>'; }else{ echo '<script>alert("Username atau password anda salah")</script>'; } } ?><br /> <p>Belum punya akun? daftar <a style="color:#00C;" href="registrasi.php">DISINI</a></p> <p>atau klik <a style="color:#00C;" href="index.php">Kembali</a></p> </div> </body> </html>
avatar belabeela
@belabeela

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Tanggapan

Tong bantuannya

biasakan menjelaskan pertanyaan ya, bukan cuma copy paste code. SIlahkan baca aturan main

1 Jawaban:

BIasanya error

session_start(): Cannot start session when headers already 

Karena sudah ada output duluan.

avatar hilmanski
@hilmanski

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