title: variable key name
body: <p>Can I check for a variable key without using a temporary variable.</p>
  
  <pre><code>$var = 'blabla';
  $key = "{$var}_abc";
  
  if(isset($someobject-&gt;$key))...
  </code></pre>
  
  <p>?</p>
  
  <p>with arrays you can do this... $array["{$var}_abc"]</p>