title: ordering array keys?
body: <p>i want to create an array with 2 keys and i want them in following order:</p>
  
  <pre><code>$array['higher'];
  $array['escalate'];
  </code></pre>
  
  <p>how could i accomplish this without creating any value.</p>
  
  <p>i want to add values to the array with later on...</p>
  
  <pre><code>$array['higher'][] = 'some_value';
  $array['escalate'][] = 'some_value';
  </code></pre>
  
  <p>...but first i need to create the keys in that order.</p>
  
  <p>thanks in advance!</p>