title: Is mysqli_multi_query asynchronous?
body: <pre><code>$databases = array();
  $path = '/Path/To/Directory';
  $main_link = mysqli_connect('localhost', 'USERNAME', 'PASSWORD');
  $files = scandir($path);
  $ignore_files = array();
  
  foreach($files as $file)
  {
      if (!in_array($file, $ignore_files))
      {
          $database = substr($file, 0, strpos($file,'.'));
          $databases[] = $database;
          mysqli_query($main_link, "DROP DATABASE IF EXISTS $database") or die ("$database 1" . mysqli_error($main_link));
          mysqli_query($main_link, "CREATE DATABASE $database") or die ("$database 2" .mysqli_error($main_link));
          $db_link = mysqli_connect('localhost', 'USERNAME', 'PASSWORD', $database);
          //In here a whole database dump with scheam + data is executed. 
          mysqli_multi_query($db_link, file_get_contents($path.'/'.$file)) or die ("$database 4" .mysqli_error($db_link));        
      }   
  }
  </code></pre>
  
  <p>When running this script it was done very quickly (returned to browser), but it was still running queries after the browser said it was done. Why is this?</p>