title: Can't submit input matrix name
body: <p>I have table like this:</p>
  
  <pre><code>&lt;tr&gt;
  &lt;td style="width:5% !important;"&gt;&lt;input type="text" style="width:50%" name="CostingSheet[CostingSheetCredits[][pax_adult]]" value="1"&gt;&lt;/td&gt;
  &lt;td style="width:5% !important;"&gt;&lt;input type="text" style="width:50%" name="CostingSheet[CostingSheetCredits[][pax_inf]]" value=""&gt;&lt;/td&gt;
  &lt;/tr&gt;
  </code></pre>
  
  <p>and when I submit it I get array like this:</p>
  
  <pre><code>["CostingSheetCredits["]=&gt;
      ["pax_adult"]=&gt; "2"
      ["pax_inf"]=&gt; ""
  </code></pre>
  
  <p>and I would like to get something like this:</p>
  
  <pre><code>["CostingSheetCredits]=&gt;
   [0] =&gt;
      ["pax_adult"]=&gt; "2"
      ["pax_inf"]=&gt; ""
  </code></pre>
  
  <p>What am I doing wrong? This bugs me for few days already. Thanks everyone for your answers and help.</p>