Masih di ambangbatas!. Kali ini, kita akan membahas cara membuat form login dengan menggunakan bahasa php. Daripada banyak bacot, kita langsung saja. Yuk simak!
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Contoh :
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Buat file baru dengan :
- cek_login.php
- daftar.php
- index.php
- koneksi.php
- login.php
- logout.php
- proses_daftar.php
cek_login.php
<?php
include "koneksi.php";
$username = $_POST['username'];
$password = $_POST['password'];
if (empty($username)) {
echo "<script>alert('Username kosong')</script>";
echo "<meta http-equiv='refresh' content='1 url=login.php'>";
} else if (empty($password)) {
echo "<script>alert('Password kosong')</script>";
echo "<meta http-equiv='refresh' content='1 url=login.php'>";
} else {
session_start();
$login = mysql_query("select * from member where username='$username' and password='$password'");
if (mysql_num_rows($login)>0) {
$_SESSION['username']=$username;
header("location:index.php");
} else {
echo "<script>alert('Username atau password salah!')</script>";
echo "<meta http-equiv='refresh' content='1 url=login.php'>";
}
}
?>
include "koneksi.php";
$username = $_POST['username'];
$password = $_POST['password'];
if (empty($username)) {
echo "<script>alert('Username kosong')</script>";
echo "<meta http-equiv='refresh' content='1 url=login.php'>";
} else if (empty($password)) {
echo "<script>alert('Password kosong')</script>";
echo "<meta http-equiv='refresh' content='1 url=login.php'>";
} else {
session_start();
$login = mysql_query("select * from member where username='$username' and password='$password'");
if (mysql_num_rows($login)>0) {
$_SESSION['username']=$username;
header("location:index.php");
} else {
echo "<script>alert('Username atau password salah!')</script>";
echo "<meta http-equiv='refresh' content='1 url=login.php'>";
}
}
?>
daftar.php
<!DOCTYPE html>
<html>
<head>
<title>Daftar</title>
</head>
<body>
<form method="post" name="daftar" action="proses_daftar.php">
Nama : <input type="text" name="nama"><br><br>
Email : <input type="text" name="email"><br><br>
Username : <input type="text" name="username"><br><br>
Password : <input type="password" name="password"><br><br>
<input type="submit" name="submit" value="DAFTAR!"> | Sudah punya akun? <a href="login.php">Login!</a>
</form>
</body>
</html>
<html>
<head>
<title>Daftar</title>
</head>
<body>
<form method="post" name="daftar" action="proses_daftar.php">
Nama : <input type="text" name="nama"><br><br>
Email : <input type="text" name="email"><br><br>
Username : <input type="text" name="username"><br><br>
Password : <input type="password" name="password"><br><br>
<input type="submit" name="submit" value="DAFTAR!"> | Sudah punya akun? <a href="login.php">Login!</a>
</form>
</body>
</html>
index.php
<?php
include "koneksi.php";
session_start();
if (!isset($_SESSION['username'])) {
header("location:login.php");
}
?>
Berhasil login, <a href="logout.php">Logout</a>
include "koneksi.php";
session_start();
if (!isset($_SESSION['username'])) {
header("location:login.php");
}
?>
Berhasil login, <a href="logout.php">Logout</a>
koneksi.php
<?php
mysql_connect("localhost","root","") or die ("Gagal Terhubung ke Database");
mysql_select_db("login") or die ("Database Tidak Ditemukan");
?>
mysql_connect("localhost","root","") or die ("Gagal Terhubung ke Database");
mysql_select_db("login") or die ("Database Tidak Ditemukan");
?>
login.php
<?php
include "koneksi.php";
session_start();
if (isset($_SESSION['username'])) {
header("location:index.php");
}
?>
<!DOCTYPE html>
<html>
<head>
<title>LOGIN!</title>
</head>
<body>
<form method="post" name="login" action="cek_login.php">
Username : <input type="text" name="username"><br><br>
Password : <input type="password" name="password"><br>
<input type="submit" name="submit" value="LOGIN!"> | Tidak punya akun? <a href="daftar.php">Daftar!</a>
</form>
</body>
</html>
include "koneksi.php";
session_start();
if (isset($_SESSION['username'])) {
header("location:index.php");
}
?>
<!DOCTYPE html>
<html>
<head>
<title>LOGIN!</title>
</head>
<body>
<form method="post" name="login" action="cek_login.php">
Username : <input type="text" name="username"><br><br>
Password : <input type="password" name="password"><br>
<input type="submit" name="submit" value="LOGIN!"> | Tidak punya akun? <a href="daftar.php">Daftar!</a>
</form>
</body>
</html>
logout.php
<?php
session_start();
session_destroy();
echo "<script>alert('Anda telah Logout!')</script>";
echo "<meta http-equiv='refresh' content='1 url=login.php'>";
?>
session_start();
session_destroy();
echo "<script>alert('Anda telah Logout!')</script>";
echo "<meta http-equiv='refresh' content='1 url=login.php'>";
?>
proses_daftar.php
<?php
include "koneksi.php";
$nama = $_POST['nama'];
$email = $_POST['email'];
$username = $_POST['username'];
$password = $_POST['password'];
if (empty($nama)) {
echo "<script>alert('Nama harap diisi!')</script>";
echo "<meta http-equiv='refresh' content='1 url=login.php'>";
} else if (empty($email)) {
echo "<script>alert('Email harap diisi!')</script>";
echo "<meta http-equiv='refresh' content='1 url=login.php'>";
} else if (empty($username)) {
echo "<script>alert('Username harap diisi!')</script>";
echo "<meta http-equiv='refresh' content='1 url=login.php'>";
} else if (empty($password)) {
echo "<script>alert('Password harap diisi!')</script>";
echo "<meta http-equiv='refresh' content='1 url=login.php'>";
} else {
$daftar = mysql_query("INSERT INTO member (username,password,nama,email) values ('$username','$password','$nama','$email')");
if ($daftar) {
echo "<script>alert('Berhasil mendaftar!')</script>";
echo "<meta http-equiv='refresh' content='1 url=daftar.php'>";
} else {
echo "<script>alert('Gagal mendaftar!')</script>";
echo "<meta http-equiv='refresh' content='1 url=daftar.php'>";
}
}
?>
include "koneksi.php";
$nama = $_POST['nama'];
$email = $_POST['email'];
$username = $_POST['username'];
$password = $_POST['password'];
if (empty($nama)) {
echo "<script>alert('Nama harap diisi!')</script>";
echo "<meta http-equiv='refresh' content='1 url=login.php'>";
} else if (empty($email)) {
echo "<script>alert('Email harap diisi!')</script>";
echo "<meta http-equiv='refresh' content='1 url=login.php'>";
} else if (empty($username)) {
echo "<script>alert('Username harap diisi!')</script>";
echo "<meta http-equiv='refresh' content='1 url=login.php'>";
} else if (empty($password)) {
echo "<script>alert('Password harap diisi!')</script>";
echo "<meta http-equiv='refresh' content='1 url=login.php'>";
} else {
$daftar = mysql_query("INSERT INTO member (username,password,nama,email) values ('$username','$password','$nama','$email')");
if ($daftar) {
echo "<script>alert('Berhasil mendaftar!')</script>";
echo "<meta http-equiv='refresh' content='1 url=daftar.php'>";
} else {
echo "<script>alert('Gagal mendaftar!')</script>";
echo "<meta http-equiv='refresh' content='1 url=daftar.php'>";
}
}
?>
Sedangkan untuk database, kita menggunakan MySQL.
Buat database dan tabel, lalu buat kolom dengan :
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Nah, hanya segitu yang dapat kami sampaikan. Jika kurang mengerti, kalian dapat berkomentar dibawah :).
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