sweeneyapps/main.php

## main.php
<?php
ob_start();
session_start();

if(isset($_SESSION['user']) != ""){
    header("location: home.php");
}

require 'conf.php';

$mysqli = new mysqli(DB_HOST, DB_USER, DB_PASS, DB_NAME);

if(mysqli_connect_errno()) {
    die("Some trouble " . mysqli_connect_error());
}
else{
    // echo "Done";
}

$name = $username = $pass = $email = $phone = "";
$nameError = $passError = $usernameError = $emailError = $phoneError = $final = "";
$error = false;


function clean($a, $e = false) {
    global $mysqli;

    $b = mysqli_real_escape_string($mysqli, $a);

    if ($e) {
        $b = filter_var($b, FILTER_SANITIZE_EMAIL, FILTER_FLAG_STRIP_HIGH);
    } else {
        $b = filter_var($b, FILTER_SANITIZE_STRING, FILTER_FLAG_STRIP_HIGH);
    }
    return $b;
}

function printLog($message) {
    echo "Log: | " . $message . "<br>";
}

if(isset($_POST['btn-signup'])) {

    $name = clean($_POST['name']);
    $username = clean($_POST['username']);
    $pass = clean($_POST['pass']);
    $hashPass = sha1(md5($pass));
    $email = clean($_POST['email'], true);
    $phone = clean($_POST['phone']);


    if(empty($name)) {
        $error = true;
        $nameError = "Please enter your name";
    }

    if(empty($username)) {
        $error = true;
        $usernameError = "Please enter an user name";

    }

    if(!empty($username)){
        if(strlen($username)<4) {
            $error = true;
            $usernameError = "Username must have minimum 4 characters";

        }

        $query = "SELECT username FROM signup WHERE username = '$username'";
        $result = $mysqli->query($query);
        $count = $result->num_rows;
        $result->close();

        if($count != 0) {
            $error = true;
            $usernameError = "Username already taken";

        }

    }

    if(empty($pass)) {
        $error = true;
        $passError = "Please enter a password";
    }

    if(empty($email)) {
        $error = true;
        $emailError = "Please enter an email";
    }

    if(empty($phone)) {
        $error = true;
        $phoneError = "Please enter a phone number";
    }


    if(!empty($pass)){
        if(strlen($pass)<6) {
            $error = true;
            $passError = "Password must have minimum 6 characters";
        }
    }

    if($error != true) {

        $query = "INSERT INTO signup(fullname, username, email, password, mobileno) VALUES ('$name', '$username', '$email', '$hashPass', '$phone')";
        $res = $mysqli->query($query);


        if($res) {

            $final = "Sucessfully registered. Please Login";

            unset($name);
            unset($username);
            unset($pass);
            unset($hashPass);
            unset($email);
            unset($phone);

            //header("Location: login.php");
        }
        else{
            $final = "Some trouble, Please try again later";
        }


    }
}

unset($hashPass);
$mysqli->close();
?>

<!DOCTYPE>
<html lang='en'>
<head>
	<title>FC</title>

	<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js">
  	</script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
  <style>

 body {


    background:white;
}

.form_bg {
    background-color:#eee;
    color:#666;
    padding:20px;
    border-radius:10px;

    border:1px solid #fff;
    margin: auto;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    width: 320px;
    height: 580px;
}

.align-center {

    text-align:center;
}
.btn-default {float:left;}
.error {
  color: red;
}
</style>
</head>
<body>
  <div class="container">
 <div class="row">
<div class="col align-self-start"><img src="images/fcbanner.jpg" class="img-responsive"
alt="fcbanner"></div>
      <div class="col align-self-center">
        <div class="form_bg">
            <form method="POST" action="<?php echo htmlspecialchars($_SERVER['PHP_SELF']); ?>" autocomplete="off">
                 <h2 class="text-center">Create Account</h2>
                <br/>
                <div class="form-group">
                    <input type="text" class="form-control" value="<?php echo $name; ?>" name="name" placeholder="Full Name">
                    <span class="error"><?php echo $nameError; ?></span>
                </div>
                <div class="form-group">
                    <input type="text" class="form-control" value="<?php echo $username; ?>" name="username" placeholder="Username">
                    <span class="error"><?php echo $usernameError; ?> </span>
                </div>
                <div class="form-group">
                    <input type="email" class="form-control" value="<?php echo $email; ?>" name="email" placeholder="Email">
                    <span class="error"><?php echo $emailError; ?></span>
                </div>
                <div class="form-group">
                    <input type="password" class="form-control" value="<?php echo $pass; ?>" name="pass" placeholder="Password">
                   <span class="error"> <?php echo $passError; ?> </span>
                    </div>

                 <div class="form-group">
                    <input type="tel" class="form-control" value="<?php echo $phone; ?>" name="phone" placeholder="Mobile Number">
                   <span class="error"> <?php echo $phoneError; ?> </span>
                    </div>
                    <br/>
                 <button type="submit" class="btn btn-default" name="btn-signup">Register</button><br><br><br>
                 <div class="error"><?php echo $final; ?></div>
                 <a href="fcmain.php">Already have an Account??</a>
                 </div>
            </form>

    </div>
  </div>
</body>
</html>
	<?php
	ob_start();
	session_start();

	if(isset($_SESSION['user']) != ""){
	header("location: home.php");
	}

	require 'conf.php';

	$mysqli = new mysqli(DB_HOST, DB_USER, DB_PASS, DB_NAME);

	if(mysqli_connect_errno()) {
	die("Some trouble " . mysqli_connect_error());
	}
	else{
	// echo "Done";
	}

	$name = $username = $pass = $email = $phone = "";
	$nameError = $passError = $usernameError = $emailError = $phoneError = $final = "";
	$error = false;


	function clean($a, $e = false) {
	global $mysqli;

	$b = mysqli_real_escape_string($mysqli, $a);

	if ($e) {
	$b = filter_var($b, FILTER_SANITIZE_EMAIL, FILTER_FLAG_STRIP_HIGH);
	} else {
	$b = filter_var($b, FILTER_SANITIZE_STRING, FILTER_FLAG_STRIP_HIGH);
	}
	return $b;
	}

	function printLog($message) {
	echo "Log: \| " . $message . "<br>";
	}

	if(isset($_POST['btn-signup'])) {

	$name = clean($_POST['name']);
	$username = clean($_POST['username']);
	$pass = clean($_POST['pass']);
	$hashPass = sha1(md5($pass));
	$email = clean($_POST['email'], true);
	$phone = clean($_POST['phone']);



	if(empty($name)) {
	$error = true;
	$nameError = "Please enter your name";
	}

	if(empty($username)) {
	$error = true;
	$usernameError = "Please enter an user name";

	}

	if(!empty($username)){
	if(strlen($username)<4) {
	$error = true;
	$usernameError = "Username must have minimum 4 characters";

	}

	$query = "SELECT username FROM signup WHERE username = '$username'";
	$result = $mysqli->query($query);
	$count = $result->num_rows;
	$result->close();

	if($count != 0) {
	$error = true;
	$usernameError = "Username already taken";

	}

	}

	if(empty($pass)) {
	$error = true;
	$passError = "Please enter a password";
	}

	if(empty($email)) {
	$error = true;
	$emailError = "Please enter an email";
	}

	if(empty($phone)) {
	$error = true;
	$phoneError = "Please enter a phone number";
	}



	if(!empty($pass)){
	if(strlen($pass)<6) {
	$error = true;
	$passError = "Password must have minimum 6 characters";
	}
	}

	if($error != true) {

	$query = "INSERT INTO signup(fullname, username, email, password, mobileno) VALUES ('$name', '$username', '$email', '$hashPass', '$phone')";
	$res = $mysqli->query($query);


	if($res) {

	$final = "Sucessfully registered. Please Login";

	unset($name);
	unset($username);
	unset($pass);
	unset($hashPass);
	unset($email);
	unset($phone);

	//header("Location: login.php");
	}
	else{
	$final = "Some trouble, Please try again later";
	}


	}
	}

	unset($hashPass);
	$mysqli->close();
	?>

	<!DOCTYPE>
	<html lang='en'>
	<head>
	<title>FC</title>

	<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
	<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js">
	</script>
	<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
	<style>

	body {


	background:white;
	}

	.form_bg {
	background-color:#eee;
	color:#666;
	padding:20px;
	border-radius:10px;

	border:1px solid #fff;
	margin: auto;
	top: 0;
	right: 0;
	bottom: 0;
	left: 0;
	width: 320px;
	height: 580px;
	}

	.align-center {

	text-align:center;
	}
	.btn-default {float:left;}
	.error {
	color: red;
	}
	</style>
	</head>
	<body>
	<div class="container">
	<div class="row">
	<div class="col align-self-start"><img src="images/fcbanner.jpg" class="img-responsive"
	alt="fcbanner"></div>
	<div class="col align-self-center">
	<div class="form_bg">
	<form method="POST" action="<?php echo htmlspecialchars($_SERVER['PHP_SELF']); ?>" autocomplete="off">
	<h2 class="text-center">Create Account</h2>
	<br/>
	<div class="form-group">
	<input type="text" class="form-control" value="<?php echo $name; ?>" name="name" placeholder="Full Name">
	<span class="error"><?php echo $nameError; ?></span>
	</div>
	<div class="form-group">
	<input type="text" class="form-control" value="<?php echo $username; ?>" name="username" placeholder="Username">
	<span class="error"><?php echo $usernameError; ?> </span>
	</div>
	<div class="form-group">
	<input type="email" class="form-control" value="<?php echo $email; ?>" name="email" placeholder="Email">
	<span class="error"><?php echo $emailError; ?></span>
	</div>
	<div class="form-group">
	<input type="password" class="form-control" value="<?php echo $pass; ?>" name="pass" placeholder="Password">
	<span class="error"> <?php echo $passError; ?> </span>
	</div>

	<div class="form-group">
	<input type="tel" class="form-control" value="<?php echo $phone; ?>" name="phone" placeholder="Mobile Number">
	<span class="error"> <?php echo $phoneError; ?> </span>
	</div>
	<br/>
	<button type="submit" class="btn btn-default" name="btn-signup">Register</button><br><br><br>
	<div class="error"><?php echo $final; ?></div>
	<a href="fcmain.php">Already have an Account??</a>
	</div>
	</form>

	</div>
	</div>
	</body>
	</html>