title: change value of a key of an array within an array in php?
body: <p>I have an array within an array like:</p>
  
  <pre><code>$some_large_array = array(
      'person' =&gt; array('name' =&gt; 'stefanie', 'hobby' =&gt; 'rock climbing',),
      'dog' =&gt; array('name' =&gt; 'orbit', 'hobby' =&gt; 'chewing curtains'));
  </code></pre>
  
  <p>How can I change the value of of 'hobby' of 'dog' and return it as 'napping'? </p>