Huh? Response times? Like, how long the query took?
If you want to know how long the query took:
$query = "SELECT * FROM `table` ORDER BY id DESC";
$start = microtime(true); // get time of start
/**
* Do your mySQL query in this area
*/
$result = mysql_query($query);
$end = microtime(true); // Get ending time
$total = $end-$start;
echo 'Query took '.$total.' seconds to execute';