<?php
 session_start();
 $servername = "localhost";
 $username = "root";
 $password = "****";
 $dbname = "database";

 // Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
 die("Connection failed: " . $conn->connect_error);
}

$sql = "SELECT id, username, passcode, email, Address, City, Country,     Zip, FirstName, LastName, About FROM admin";
$result = $conn->query($sql);
$row = $result->fetch_assoc();

$_SESSION['username'] = "username";

?>

<input type="email" class="form-control" placeholder="Email" value="<?php echo $row["email"]; ?>">

<input type="text" class="form-control" placeholder="Username" value="<?php $_SESSION["username"] ?>">