title: Search into multidimensional stdClass Object
body: <p>I have this stdClass Object:</p>
  
  <pre><code>stdClass Object ( 
  [summary] =&gt; Appuntamenti 
  [items] =&gt; Array ( 
      [0] =&gt; stdClass Object (
          [summary] =&gt; Busy 
          [start] =&gt; stdClass Object ( 
              [dateTime] =&gt; 2016-02-02T17:00:00+01:00 
              [timeZone] =&gt; Europe/Rome 
          ) 
          [end] =&gt; stdClass Object ( 
              [dateTime] =&gt; 2016-02-02T17:30:00+01:00 
              [timeZone] =&gt; Europe/Rome 
          ) 
      ) 
  ) 
  )
  </code></pre>
  
  <p>This stdClass Object is the result of a Google Calendar request and can be longer than this.</p>
  
  <p>I'd like to check if there's an event with a specific datetime, for example 
  if results contains "Start -> 2016-02-02T17:00:00+01:00" then return true.</p>
  
  <p>I found methods to search in arrays but not in multidimensional stdClass Objects.</p>