title: How to access items from a debug_backtrace()?
body: <p>In this shortened example:</p>
  
  <p><code>print_r($foo);</code></p>
  
  <pre><code>Array
  (
      [0] =&gt; Array
          (
              [function] =&gt; exception_handler
              [class] =&gt; LP
              [type] =&gt; ::
              [args] =&gt; Array
                  (
                      [0] =&gt; Exception Object
                          (
                              [trace:Exception:private] =&gt; Array
                                  (
                                      [0] =&gt; Array
                                          (
                                              [args] =&gt; Array
                                                  (
                                                      [0] =&gt; 'hello'
                                                      [1] =&gt; 'world'
                                                  )
                                          )
                                  )
                          )
                  )
          )
  )   
  </code></pre>
  
  <p>How do I access the last item which is "hello".</p>
  
  <p>I am lost after <code>$foo[0]['args'][0]</code></p>