Sabtu, 28 September 2013
Khusus buat newbie yang ingin buat script login sederhana. Buat yang sudah advanced bisa share skill lainnya 
Dalam tutorial ini akan dibuat 3 file
1. main_login.php
2. checklogin.php
3. login_success.php
Berikutnya adalah langkah membuat table dalam database, biasanya dipakai PHPMyAdmin bawaan hostingan.
1. Buat tabel dengan nama "members" dalam database "test".
SQL Query
Code: (Select All)
CREATE TABLE `members` (
`id` int(4) NOT NULL auto_increment,
`username` varchar(65) NOT NULL default '',
`password` varchar(65) NOT NULL default '',
PRIMARY KEY (`id`)
) TYPE=MyISAM AUTO_INCREMENT=2 ;
--
-- Dumping data for table `members`
--
INSERT INTO `members` VALUES (1, 'john', '1234');2. Buat file main_login.php.
kode
PHP Code: (Select All)
<table width="300" border="0" align="center" cellpadding="0" cellspacing="1" bgcolor="#CCCCCC">
<tr>
<form name="form1" method="post" action="checklogin.php">
<td>
<table width="100%" border="0" cellpadding="3" cellspacing="1" bgcolor="#FFFFFF">
<tr>
<td colspan="3"><strong>Member Login </strong></td>
</tr>
<tr>
<td width="78">Username</td>
<td width="6">:</td>
<td width="294"><input name="myusername" type="text" id="myusername"></td>
</tr>
<tr>
<td>Password</td>
<td>:</td>
<td><input name="mypassword" type="text" id="mypassword"></td>
</tr>
<tr>
<td> </td>
<td> </td>
<td><input type="submit" name="Submit" value="Login"></td>
</tr>
</table>
</td>
</form>
</tr>
</table> 3. Buat file checklogin.php.
kode
PHP Code: (Select All)
<?php
$host="localhost"; // Host name $username=""; // Mysql username $password=""; // Mysql password $db_name="test"; // Database name $tbl_name="members"; // Table name
// Connect to server and select databse.mysql_connect("$host", "$username", "$password")or die("cannot connect"); mysql_select_db("$db_name")or die("cannot select DB");
// username dan password yang dikirim dari form login $myusername=$_POST['myusername']; $mypassword=$_POST['mypassword'];
// Untuk melindungi MySQL injection (http://us.php.net/mysql_real_escape_string)$myusername = stripslashes($myusername);$mypassword = stripslashes($mypassword);$myusername = mysql_real_escape_string($myusername);$mypassword = mysql_real_escape_string($mypassword);
$sql="SELECT * FROM $tbl_name WHERE username='$myusername' and password='$mypassword'";$result=mysql_query($sql);
// Mysql_num_row is counting table row$count=mysql_num_rows($result);// If result matched $myusername and $mypassword, table row must be 1 row
if($count==1){// daftarkan $myusername, $mypassword dan diarahkan ke file "login_success.php"session_register("myusername");session_register("mypassword"); header("location:login_success.php");
}
else {
echo "Wrong Username or Password";
}?>
Kode untuk PHP Terbaru versi 5.x
PHP Code: (Select All)
<?php
ob_start();$host="localhost"; // Host name $username=""; // Mysql username $password=""; // Mysql password $db_name="test"; // Database name $tbl_name="members"; // Table name
// Connect to server and select databse.mysql_connect("$host", "$username", "$password")or die("cannot connect"); mysql_select_db("$db_name")or die("cannot select DB");
// Define $myusername and $mypassword $myusername=$_POST['myusername']; $mypassword=$_POST['mypassword'];
// To protect MySQL injection (more detail about MySQL injection)$myusername = stripslashes($myusername);$mypassword = stripslashes($mypassword);$myusername = mysql_real_escape_string($myusername);$mypassword = mysql_real_escape_string($mypassword);
$sql="SELECT * FROM $tbl_name WHERE username='$myusername' and password='$mypassword'";$result=mysql_query($sql);
// Mysql_num_row is counting table row$count=mysql_num_rows($result);// If result matched $myusername and $mypassword, table row must be 1 row
if($count==1){// Register $myusername, $mypassword and redirect to file "login_success.php"session_register("myusername");session_register("mypassword"); header("location:login_success.php");
}
else {
echo "Wrong Username or Password";
}
ob_end_flush();?>4. Buat file login_success.php.
kode
PHP Code: (Select All)
// Cek jika session tidak terdaftar , redirect ke halaman utama.
// Letakkan kode ini di bagian pertama halaman web anda. <? session_start();
if(!session_is_registered(myusername)){header("location:main_login.php");
}?>
<html>
<body>
Login Successful
</body>
</html> 5. Buat file logout.php
kode
PHP Code: (Select All)
// Letakkan kode ini di bagian pertama halaman web anda. <? session_start();session_destroy();?>
.png "English"){kind=small}
