What is the problem with creating a registration form?

Question

PHP

I made a registration form in PHP + MySQL, read the article on Habré . Everything is written as it should, there are no errors. The only thing that does not work is the submit button (Register), it stupidly does not react to anything, nothing happens. The user is not entered into the database.
register.php:

<from method="post">
    Логин <input name="login" type="text"><br>
    Пароль <input name="password" type="password"><br>
    <input name="submit" type="submit" value="Зарегистрироваться">
  </from>

  <?
  $link = mysqli_connect('localhost','Nightik','qwerty','register');

  if(isset($_POST['submit'])) {
    $err = array();

    if(!preg_match("/^[a-zA-Z0-9]+$/",$_POST['login'])) {
      $err[] = "Логин может состоять только из букв английского алфавита и цифр";
    }

    if(strlen($_POST['login']) < 3 or strlen($_POST['login']) > 30) {
      $err[] = "Логин должен быть не меньше 3-x символов и не больше 30";
    }

    $sql = "
    SELECT COUNT(user_id) 
    FROM users 
    WHERE user_login='".mysql_real_escape_string($_POST['login'])."'
    ";

    $query = mysqli_query($link,$sql);

    if(mysqli_result($query, 0) > 0) {
      $err[] = "Пользватель с таким логином уже существует в базе данных";
    }

    if(count($err) == 0) {
      $login = $_POST['login'];
      $password = md5(md5(trim($_POST['password'])));

      $sql = "
        SELECT COUNT(user_id) 
        FROM users 
        WHERE user_login='".mysql_real_escape_string($_POST['login'])."'
      ";

      mysqli_query($link,$sql);

      header("location: login.php"); exit();
    }else {
      print "<b>При регистрации произошли следующие ошибки: </b><br>";

      foreach($err AS $error) {
        print $error . "<br>";
      }
    }
  }
?>

Answer 1

you don't have<form , а <from