title: With the PHP Riak Client, how would I search two indexes for values simultaneously?
body: <p>I have a dataset in <a href="http://basho.com/riak/" rel="nofollow">Riak</a> with different items indexed (using <code>index_bin</code>). How would I go about searching objects where two of these indexes have particular values in a single request? Example: gender, last_name with gender = male, and last_name = Smith</p>
  
  <p>Would I use Map/Reduce? If so, any example code?</p>