title: Kohana: Validation on a multidimensional array
body: <p>How to perform a validation of a multidimensional array?</p>
  
  <p>Array (print_r):</p>
  
  <pre><code>Array ( 
      [btitel] =&gt; Array ( [1] =&gt; [2] =&gt; ) 
      [btext]  =&gt; Array ( [1] =&gt; [2] =&gt; ) 
  )
  </code></pre>
  
  <p>The deepest values may not be empty and must have more then 3 characters.</p>
  
  <p>Is it possible to perform this in just one instance?</p>