Hello,
here is the code I found in a php website for register, login with php and mysql.
When I registered it worked but when I tried to login with the detailes I entered into the database I got this error message:
Incorrect Credentials, Try again What is wrong? help me please.
dbconnect.php
<?php
// this will avoid mysql_connect() deprecation error.
error_reporting( ~E_DEPRECATED & ~E_NOTICE );
// but I strongly suggest you to use PDO or MySQLi.
define('DBHOST', 'localhost');
define('DBUSER', 'root');
define('DBPASS', '');
define('DBNAME', 'dbregistration');
$conn = mysql_connect(DBHOST,DBUSER,DBPASS);
$dbcon = mysql_select_db(DBNAME);
if ( !$conn ) {
die("Connection failed : " . mysql_error());
}
if ( !$dbcon ) {
die("Database Connection failed : " . mysql_error());
}
?>
home.php
<?php
ob_start();
session_start();
require_once 'dbconnect.php';
// if session is not set this will redirect to login page
if( !isset($_SESSION['user']) ) {
header("Location: index.php");
exit;
}
// select loggedin users detail
$res=mysql_query("SELECT * FROM users WHERE userId=".$_SESSION['user']);
$userRow=mysql_fetch_array($res);
?>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Welcome - <?php echo $userRow['userEmail']; ?></title>
<link rel="stylesheet" href="assets/css/bootstrap.min.css" type="text/css" />
<link rel="stylesheet" href="style.css" type="text/css" />
</head>
<body>
<nav class="navbar navbar-default navbar-fixed-top">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand" href="http://www.codingcage.com">Coding Cage</a>
</div>
<div id="navbar" class="navbar-collapse collapse">
<ul class="nav navbar-nav">
<li class="active"><a href="http://www.codingcag...-php-mysql.html">Back to Article</a></li>
<li><a href="http://www.codingcag...jQuery</a></li>
<li><a href="http://www.codingcag...P">PHP</a></li>
</ul>
<ul class="nav navbar-nav navbar-right">
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">
<span class="glyphicon glyphicon-user"></span> Hi' <?php echo $userRow['userEmail']; ?> <span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="logout.php?logout"><span class="glyphicon glyphicon-log-out"></span> Sign Out</a></li>
</ul>
</li>
</ul>
</div><!--/.nav-collapse -->
</div>
</nav>
<div id="wrapper">
<div class="container">
<div class="page-header">
<h3>Coding Cage - Programming Blog</h3>
</div>
<div class="row">
<div class="col-lg-12">
<h1>Focuses on PHP, MySQL, Ajax, jQuery, Web Design and more...</h1>
</div>
</div>
</div>
</div>
<script src="assets/jquery-1.11.3-jquery.min.js"></script>
<script src="assets/js/bootstrap.min.js"></script>
</body>
</html>
<?php ob_end_flush(); ?>
index.php
<?php
ob_start();
session_start();
require_once 'dbconnect.php';
// it will never let you open index(login) page if session is set
if ( isset($_SESSION['user'])!="" ) {
header("Location: home.php");
exit;
}
$error = false;
if( isset($_POST['btn-login']) ) {
// prevent sql injections/ clear user invalid inputs
$email = trim($_POST['email']);
$email = strip_tags($email);
$email = htmlspecialchars($email);
$pass = trim($_POST['pass']);
$pass = strip_tags($pass);
$pass = htmlspecialchars($pass);
// prevent sql injections / clear user invalid inputs
if(empty($email)){
$error = true;
$emailError = "Please enter your email address.";
} else if ( !filter_var($email,FILTER_VALIDATE_EMAIL) ) {
$error = true;
$emailError = "Please enter valid email address.";
}
if(empty($pass)){
$error = true;
$passError = "Please enter your password.";
}
// if there's no error, continue to login
if (!$error) {
$password = hash('sha256', $pass); // password hashing using SHA256
$res=mysql_query("SELECT userId, userName, userPass FROM users WHERE userEmail='$email'");
$row=mysql_fetch_array($res);
$count = mysql_num_rows($res); // if uname/pass correct it returns must be 1 row
if( $count == 1 && $row['userPass']==$password ) {
$_SESSION['user'] = $row['userId'];
header("Location: home.php");
} else {
$errMSG = "Incorrect Credentials, Try again...";
}
}
}
?>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Coding Cage - Login & Registration System</title>
<link rel="stylesheet" href="assets/css/bootstrap.min.css" type="text/css" />
<link rel="stylesheet" href="style.css" type="text/css" />
</head>
<body>
<div class="container">
<div id="login-form">
<form method="post" action="<?php echo htmlspecialchars($_SERVER['PHP_SELF']); ?>" autocomplete="off">
<div class="col-md-12">
<div class="form-group">
<h2 class="">Sign In.</h2>
</div>
<div class="form-group">
<hr />
</div>
<?php
if ( isset($errMSG) ) {
?>
<div class="form-group">
<div class="alert alert-danger">
<span class="glyphicon glyphicon-info-sign"></span> <?php echo $errMSG; ?>
</div>
</div>
<?php
}
?>
<div class="form-group">
<div class="input-group">
<span class="input-group-addon"><span class="glyphicon glyphicon-envelope"></span></span>
<input type="email" name="email" class="form-control" placeholder="Your Email" value="<?php echo $email; ?>" maxlength="40" />
</div>
<span class="text-danger"><?php echo $emailError; ?></span>
</div>
<div class="form-group">
<div class="input-group">
<span class="input-group-addon"><span class="glyphicon glyphicon-lock"></span></span>
<input type="password" name="pass" class="form-control" placeholder="Your Password" maxlength="15" />
</div>
<span class="text-danger"><?php echo $passError; ?></span>
</div>
<div class="form-group">
<hr />
</div>
<div class="form-group">
<button type="submit" class="btn btn-block btn-primary" name="btn-login">Sign In</button>
</div>
<div class="form-group">
<hr />
</div>
<div class="form-group">
<a href="register.php">Sign Up Here...</a>
</div>
</div>
</form>
</div>
</div>
</body>
</html>
<?php ob_end_flush(); ?>
logout.php
<?php
session_start();
if (!isset($_SESSION['user'])) {
header("Location: index.php");
} else if(isset($_SESSION['user'])!="") {
header("Location: home.php");
}
if (isset($_GET['logout'])) {
unset($_SESSION['user']);
session_unset();
session_destroy();
header("Location: index.php");
exit;
}
?>
register.php
<?php
ob_start();
session_start();
if( isset($_SESSION['user'])!="" ){
header("Location: home.php");
}
include_once 'dbconnect.php';
$error = false;
if ( isset($_POST['btn-signup']) ) {
// clean user inputs to prevent sql injections
$name = trim($_POST['name']);
$name = strip_tags($name);
$name = htmlspecialchars($name);
$email = trim($_POST['email']);
$email = strip_tags($email);
$email = htmlspecialchars($email);
$pass = trim($_POST['pass']);
$pass = strip_tags($pass);
$pass = htmlspecialchars($pass);
// basic name validation
if (empty($name)) {
$error = true;
$nameError = "Please enter your full name.";
} else if (strlen($name) < 3) {
$error = true;
$nameError = "Name must have atleat 3 characters.";
} else if (!preg_match("/^[a-zA-Z ]+$/",$name)) {
$error = true;
$nameError = "Name must contain alphabets and space.";
}
//basic email validation
if ( !filter_var($email,FILTER_VALIDATE_EMAIL) ) {
$error = true;
$emailError = "Please enter valid email address.";
} else {
// check email exist or not
$query = "SELECT userEmail FROM users WHERE userEmail='$email'";
$result = mysql_query($query);
$count = mysql_num_rows($result);
if($count!=0){
$error = true;
$emailError = "Provided Email is already in use.";
}
}
// password validation
if (empty($pass)){
$error = true;
$passError = "Please enter password.";
} else if(strlen($pass) < 6) {
$error = true;
$passError = "Password must have atleast 6 characters.";
}
// password encrypt using SHA256();
$password = hash('sha256', $pass);
// if there's no error, continue to signup
if( !$error ) {
$query = "INSERT INTO users(userName,userEmail,userPass) VALUES('$name','$email','$password')";
$res = mysql_query($query);
if ($res) {
$errTyp = "success";
$errMSG = "Successfully registered, you may login now";
unset($name);
unset($email);
unset($pass);
} else {
$errTyp = "danger";
$errMSG = "Something went wrong, try again later...";
}
}
}
?>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Coding Cage - Login & Registration System</title>
<link rel="stylesheet" href="assets/css/bootstrap.min.css" type="text/css" />
<link rel="stylesheet" href="style.css" type="text/css" />
</head>
<body>
<div class="container">
<div id="login-form">
<form method="post" action="<?php echo htmlspecialchars($_SERVER['PHP_SELF']); ?>" autocomplete="off">
<div class="col-md-12">
<div class="form-group">
<h2 class="">Sign Up.</h2>
</div>
<div class="form-group">
<hr />
</div>
<?php
if ( isset($errMSG) ) {
?>
<div class="form-group">
<div class="alert alert-<?php echo ($errTyp=="success") ? "success" : $errTyp; ?>">
<span class="glyphicon glyphicon-info-sign"></span> <?php echo $errMSG; ?>
</div>
</div>
<?php
}
?>
<div class="form-group">
<div class="input-group">
<span class="input-group-addon"><span class="glyphicon glyphicon-user"></span></span>
<input type="text" name="name" class="form-control" placeholder="Enter Name" maxlength="50" value="<?php echo $name ?>" />
</div>
<span class="text-danger"><?php echo $nameError; ?></span>
</div>
<div class="form-group">
<div class="input-group">
<span class="input-group-addon"><span class="glyphicon glyphicon-envelope"></span></span>
<input type="email" name="email" class="form-control" placeholder="Enter Your Email" maxlength="40" value="<?php echo $email ?>" />
</div>
<span class="text-danger"><?php echo $emailError; ?></span>
</div>
<div class="form-group">
<div class="input-group">
<span class="input-group-addon"><span class="glyphicon glyphicon-lock"></span></span>
<input type="password" name="pass" class="form-control" placeholder="Enter Password" maxlength="15" />
</div>
<span class="text-danger"><?php echo $passError; ?></span>
</div>
<div class="form-group">
<hr />
</div>
<div class="form-group">
<button type="submit" class="btn btn-block btn-primary" name="btn-signup">Sign Up</button>
</div>
<div class="form-group">
<hr />
</div>
<div class="form-group">
<a href="index.php">Sign in Here...</a>
</div>
</div>
</form>
</div>
</div>
</body>
</html>
<?php ob_end_flush(); ?>
