title: How to use an input field name stored as a string as php array indicies
body: <p>I have an field name that is passed to me via an ajax function which i need to use to lookup values in an existing array. e.g.</p>
  
  <pre><code>$myarray = array(
      'name' =&gt; array(
          '0' =&gt; array(
              'first' =&gt; 'Steve'
          )
      ),
  );
  
  
  $incoming = 'name[0][first]';
  </code></pre>
  
  <p>So using the $incoming variable i wanted to get the corresponding data out of the array but cant figure out how to convert the string into the array indicies lookup.</p>
  
  <p>Im trying to come up with a method that will work regardless of the level of nesting in the array.</p>