The Voices of the ElePHPant podcast has posted the latest in their series of interviews with PHP community members. In this new episode host Cal Evans talks with Morgan Tocker,
They talk about Morgan's talk at Sunshine PHP 2015 about tuning MySQL queries using some of the built-in tools). He also mentions some of the newer features of the EXPLAIN handling including more information provided and other metadata provided as a part of the output. They also talk about some of the "cost" data associated with different queries and how they effect performance.