Here goes the code :
<?php
include 'koneksi.php';
$nama = $_POST['nama'];
$email = $_POST['email'];
$password = $_POST['password'];
$fakultas = $_POST['fakultas'];
$prodi = $_POST['prodi'];
$masuk = "INSERT INTO `datapendaftar`(`nama`, `email`, `password`, `fakultas`, `prodi`) VALUES ($nama,$email,$password,$fakultas,$prodi)";
$hasil_masuk = mysqli_query($sql,$masuk);
echo "Terima kasih sudah mendaftar <br>";
echo "Berikut adalah data yang masuk : <br>";
echo "Nama : $nama <br>";
echo "Email : $email <br>";
echo "Fakultas : $fakultas <br>";
echo "Prodi : $prodi <br>";
echo "Silahkan kembali <a href = index.php><br><input type = submit value ='Kembali'> ";
?>
It can't add to mysql database. but when I run on form html, it works as well, but not sent to mysql database