Untitled

<!--loggin.php-->
<?php
error_reporting(-1); // Report all type of errors
ini_set('display_errors', 1); // Display all errors
ini_set('output_buffering', 0); // Do not buffer outputs, write directly
?>
<!DOCTYPE html>
<html>
<head>
	<title>Loggin</title>
</head>
<body>

<?php
include('databaseConnection.php');

if (isset($_POST['send']))
{
	$username = $_POST["username"];
	$password = $_POST["password"];

	$sql = "SELECT * FROM users WHERE userName = '$username' ";
	$stmt = $dbConn->prepare($sql);

    $data = array();
    $stmt->execute($data);
    $res = $stmt->fetch(PDO::FETCH_ASSOC);
    $output = htmlentities(print_r($res, 1));
    echo "<pre>$output</pre>";
}
?>

<form method ="POST" action ="">
	<input type="text" name="username">
	<input type="password" name="password">
	<input type="submit" name="send">
</form>

</body>
</html>