PHP again guys.... still in the dark i guess

Question

i tried running this code and i know that i created an array of $errors but i don't know why am getting this error:

Notice: Undefined variable: errors in C:\xampp\htdocs\server.php on line 50

Here is the code:

<?
session_start();

$username = "";
$email = "";
$errors = array();

//connecting to the database
$db = mysqli_connect('localhost', 'root', '', 'registration');

include('errors.php');

//if the register button is clicked
if (isset($_POST['register'])) {
$username =mysql_real_escape_string($_POST['username']);
$email =mysql_real_escape_string($_POST['email']);
$password_1 =mysql_real_escape_string($_POST['password_1']);
$password_2 =mysql_real_escape_string($_POST['password_2']);

//ensure that form fields are filled properly
if ($username == "") {
array_push($errors, "username is requied"); // add error to errors array
}
if ($email == "") {
array_push($errors, "Email is requied"); // add error to errors array
}
if ($password_1 == "") {
arry_push($errors, "Password is requied"); // add error to errors array
}

if ($password_1 != $password_2) {
array_push($errors, "The two passwords does not match"); // add error to errors array
}

// if ther are no errors, save user too database
if (count($errors) == 0) {
$password = md5($password_1); //encrypt password before storing in database (security)
$sql = "INSERT INTO users (username, email,password) VALUES ('$username', '$email', '$password')";
mysqli_query($db, $sql);

$_SESSION['username'] = $username;
$_SESSION['success'] = "You are now logged in";
header('location: index.php'); // redirects to homepage
}
}

?>

<?php if (count($errors) > 0): ?>
<div class="error">
<?php foreach ($errors as $error): ?>
<p><?php echo $error; ?></p>
<?php endforeach ?>
</div>
<?php endif ?>

i really could use your help please

Answer 1

can you send the error .php too?

Answer 2

ohh yeah set too

$username = htmlspecialchars($_POST["username"])

to prevent sql injektion attacks or worse php injektion witch can get your server crashed or infected by any rootkit/virus

Answer 3

same for any userinput

Answer 4

ok im guesing the error is in line 50
you wrote $error instead of $errors