1. HTML
<html> <head> /* Google reCaptcha JS */ <script src="https://www.google.com/recaptcha/api.js"></script> </head> <body> <form action="" method="post"> Username <input type="text" name="username" class="input" /> Password <input type="password" name="password" class="input" /> <div class="g-recaptcha" data-sitekey="Google Site Key"></div> <input type="submit" value="Log In" /> <span class='msg'><?php echo $msg; ?></span> </form> </body> </html>
2. Index.php
<?php include("db.php"); session_start(); $msg=''; if($_SERVER["REQUEST_METHOD"] == "POST") { $recaptcha=$_POST['g-recaptcha-response']; if(!empty($recaptcha)) { include("getCurlData.php"); $google_url="https://www.google.com/recaptcha/api/siteverify"; $secret='Google Secret Key'; $ip=$_SERVER['REMOTE_ADDR']; $url=$google_url."?secret=".$secret."&response=".$recaptcha."&remoteip=".$ip; $res=getCurlData($url); $res= json_decode($res, true); //reCaptcha success check if($res['success']) { //Include login check code } else { $msg="Please re-enter your reCAPTCHA."; } } else { $msg="Please re-enter your reCAPTCHA."; } } ?>
3. Cek Login
$username=mysqli_real_escape_string($db,$_POST['username']); $password=md5(mysqli_real_escape_string($db,$_POST['password'])); if(!empty($username) && !empty($password)) { $result=mysqli_query($db,"SELECT id FROM users WHERE username='$username' and passcode='$password'"); $row=mysqli_fetch_array($result,MYSQLI_ASSOC); if(mysqli_num_rows($result)==1) { $_SESSION['login_user']=$username; header("location: home.php"); //Success redirection page. } else { $msg="Please give valid Username or Password."; } } else { $msg="Please give valid Username or Password."; }
4. getCurlData.php
<?php function getCurlData($url) { $curl = curl_init(); curl_setopt($curl, CURLOPT_URL, $url); curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); curl_setopt($curl, CURLOPT_TIMEOUT, 10); curl_setopt($curl, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.16) Gecko/20110319 Firefox/3.6.16"); $curlData = curl_exec($curl); curl_close($curl); return $curlData; } ?>
5. DB.php
<?php define('DB_SERVER', 'localhost'); define('DB_USERNAME', 'username'); define('DB_PASSWORD', 'password'); define('DB_DATABASE', 'database'); $db = mysqli_connect(DB_SERVER,DB_USERNAME,DB_PASSWORD,DB_DATABASE); ?>
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