Using if(isset($_POST['submit'])) to not display echo when script is open is not working

Question

I have a little problem with my if(isset($_POST[\'submit\'])) code. What I want is some echos and a table to not appear when the script is open but I do want it

Answer 1

Whats wrong in this?

<form class="navbar-form navbar-right" method="post" action="login.php">
  <div class="form-group">
    <input type="email" name="email" class="form-control" placeholder="email">
    <input type="password" name="password" class="form-control" placeholder="password">
  </div>
  <input type="submit" name="submit" value="submit" class="btn btn-success">
</form>

login.php

if(isset($_POST['submit']) && !empty($_POST['submit'])) {
  // if (!logged_in()) 
  echo 'asodj';
}