login PHP

ini merupakan cara membuat

dengan contoh output seperti ini

dan

login.php

<form method=”post” action=”proses_login.php”>

<table border=”0″ bgcolor=”#999999″ style=”top:25%; left:25%; right:25%; bottom:25%;”>

<tr>

<td>Username </td>

<td> : </td>

<td><input name=”username” type=”text”></td>

</tr>

<tr>

<td>Password </td>

<td> : </td>

<td><input name=”password” type=”password”></td>

</tr>

<tr>

<td>&nbsp;</td>

<td>&nbsp;</td>

<td><input type=”submit” name=”login” value=”Login”></td>

</tr>

</table>

</form>

<form method=”post” action=”proses_login.php”>  <table border=”0″ bgcolor=”#999999″ style=”top:25%; left:25%; right:25%; bottom:25%;”>    <tr>      <td>Username </td>  <td> : </td>      <td><input name=”username” type=”text”></td>    </tr>    <tr>      <td>Password </td>  <td> : </td>      <td><input name=”password” type=”password”></td>    </tr>    <tr>      <td>&nbsp;</td>  <td>&nbsp;</td>      <td><input type=”submit” name=”login” value=”Login”></td>    </tr>  </table></form>

proses_login.php

<?php

// memulai session

session_start();

include (“koneksi.php”);

$username = $_POST['username'];

$password = $_POST['password'];

// query untuk mendapatkan record dari username

$query = “SELECT * FROM user WHERE username = ‘$username’ AND password = ‘$password’”;

$hasil = mysql_query($query);

$data = mysql_fetch_array($hasil);

// cek kesesuaian password

if ($password == $data['password'])

{

// menyimpan username dan level ke dalam session

$_SESSION['level'] = $data['level'];

$_SESSION['username'] = $data['username'];

header (“Location: layanan.php”);

}

else echo “<h1>Login gagal</h1>”;

?>

layanan.php

<?php

session_start();

if ($_SESSION['level'] == “admin”)

{

// tampilkan menu untuk admin

echo “<h1>Selamat Datang “.$_SESSION['username'].” Anda Disini Sebagai Administrator</h1>”;

}

else if ($_SESSION['level'] == “biasa”)

{

// tampilkan menu untuk user biasa

echo “<h1>Selamat Datang “.$_SESSION['username'].” Anda Disini Sebagai User Biasa</h1>”;

}

echo “<input type=submit name=logout value=Logout onclick=location.href=’logout.php’ />”;

?>

logout.php

<?php

session_start();

unset($_SESSION ['username']);

session_destroy();

header (“Location: login.php”);

?>

dengan databasenya Session

CREATE TABLE `user` (

`id` int(11) NOT NULL auto_increment,

`username` varchar(100) NOT NULL,

`password` varchar(100) NOT NULL,

`level` varchar(100) NOT NULL,

PRIMARY KEY  (`id`),

UNIQUE KEY `username` (`username`);

INSERT INTO `user` VALUES (1, ‘riza’, ’123456′, ‘admin’);

INSERT INTO `user` VALUES (2, ‘hilmi’, ’123456′, ‘biasa’);

INSERT INTO `user` VALUES (3, ‘toni’, ’123456′, ‘biasa’);

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