July 2016

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PDO (PHP Data
Objects), adalah extension atau penambahan fitur dalam PHP yang
dirancang sebagai interface universal untuk pengaksesan berbagai jenis
database (tidak hanya MySQL). Contohnya, jika kita menggunakan PDO dalam
menulis kode pemograman, lalu suatu saat website kita bertukar database dari MySQL
ke Oracle, maka kita tidak perlu mengubah semua kode program, cukup
mengubah cara pemanggilan PDO diawal program saja.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhEeyp6PtbxtJ2ACYJWf2aR_uqCPNUWWfY3rSHqnMNpO93fcGD3_KhjFcpT77fGSugvwSzcVlP6IQhqGBJCZGj8KJ7AXPyemQ2J1h2G7C6konuYf-K9Jel8QjnALRo9U0CZTRX039yk3vo/s1600/pdo-database-connection-in-php.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="182" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhEeyp6PtbxtJ2ACYJWf2aR_uqCPNUWWfY3rSHqnMNpO93fcGD3_KhjFcpT77fGSugvwSzcVlP6IQhqGBJCZGj8KJ7AXPyemQ2J1h2G7C6konuYf-K9Jel8QjnALRo9U0CZTRX039yk3vo/s320/pdo-database-connection-in-php.png" width="320" /></a></div>
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Apa kelebihan PDO dibanding dengan Mysql dan Mysqli? 
 
 
 
dan menurut saya PDO itu jenis koneksi yang paling aman terhadap inject. 
untuk membuat login page sederhana kita membutuhkan</div>
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<li class="MsoNormal" style="line-height: normal;">config.php</li>
<li class="MsoNormal" style="line-height: normal;">index.php</li>
<li class="MsoNormal" style="line-height: normal;">logout.php</li>
<li class="MsoNormal" style="line-height: normal;">session.php</li>
<li class="MsoNormal" style="line-height: normal;">welcome.php</li>
<li class="MsoNormal" style="line-height: normal;">admin.sql</li>
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lansung aja yah</div>
 
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config.php

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PHP:</div>
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<?php 
define('DBHOST','localhost'); 
define('DBUSER','databaseuser'); 
define('DBPASS','databasepass'); 
define('DBNAME','databasename'); 
try { 
 
    //create PDO connection 
    $db = new PDO("mysql:host=".DBHOST.";port=8889;dbname=".DBNAME, DBUSER, DBPASS); 
    $db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); 
 
} catch(PDOException $e) { 
    //show error 
    echo '<p class="bg-danger">'.$e->getMessage().''; 
    exit; 
} 
?>
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index.php</div>
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PHP:</div>
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<?php 
include("config.php"); 
session_start(); 
if($_SERVER["REQUEST_METHOD"] == "POST") 
{ 
$admin = $db->prepare('SELECT * FROM admin WHERE username = :username and passcode = :passcode'); 
$admin->execute(array( 
                  ':username' => $_POST['username'], 
                  'passcode' => $_POST['password'] 
                  )); 
$row = $admin->fetch(PDO::FETCH_ASSOC); 
 
if(empty($row['username'])){ 
 
echo "Your Login Name or Password is invalid"; 
 
}else { 
 
$_SESSION['login_user'] = $_POST['username']; 
 
header("location: welcome.php"); 
} 
} 
?> 
<form action="" method="post"> 
<label>UserName :</label> 
<input type="text" name="username"/><br /> 
<label>Password :</label> 
<input type="password" name="password"/> 
<input type="submit" value=" Submit "/><br /> 
</form> </div>
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logout.php</div>
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PHP:</div>
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<?php 
session_start(); 
if(session_destroy()) 
{ 
header("Location: index.php"); 
} 
?>
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session.php</div>
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PHP:</div>
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<?php 
include("config.php"); 
session_start(); 
$user_check=$_SESSION['login_user']; 
$admin = $db->prepare('SELECT * FROM admin WHERE username = :username'); 
$admin->execute(array( 
                  ':username' => $user_check 
                  )); 
$row = $admin->fetch(PDO::FETCH_ASSOC); 
 
$login_session=$row['username']; 
 
if(!isset($login_session)) 
{ 
header("Location: login.php"); 
} 
?>
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welcome.php</div>
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PHP:</div>
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<?php 
include('session.php'); 
?> 
<body> 
<h1>Welcome <?php echo $login_session; ?></h1> 
<a href='logout.php'>logout</a> 
</body> </div>
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admin.sql</div>
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Code:</div>
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CREATE
TABLE IF NOT EXISTS `admin` (</div>
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  `id` int(11) NOT NULL AUTO_INCREMENT,</div>
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  `username` varchar(30) COLLATE
utf8_unicode_ci DEFAULT NULL,</div>
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</div>
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  `passcode` varchar(30) COLLATE
utf8_unicode_ci DEFAULT NULL,</div>
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  PRIMARY KEY (`id`),</div>
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  UNIQUE KEY `username` (`username`)</div>
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)
ENGINE=MyISAM  DEFAULT CHARSET=utf8
COLLATE=utf8_unicode_ci AUTO_INCREMENT=2 ;</div>
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 </div>
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INSERT
INTO `admin` (`id`, `username`, `passcode`) VALUES</div>
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(1,
'admin', 'admin');</div>
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PDO (PHP Data Objects), adalah extension atau penambahan fitur dalam PHP yang dirancang sebagai interface universal untuk pengaksesan be...

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