With the index (that we created in Chapter 3, Indexing as a base), in this chapter:
We wrote different search queries
We saw how PHP's implementation of the Sphinx client API can be used in PHP applications to issue some powerful search queries
We also saw how to filter our search results by different attributes
Lastly, we saw how to rank, sort, and group the search results by different attributes
In the next chapter we will build a practical application from the ground up, which will involve search using Sphinx.