to true, forces the driver to use PDO's own emulated prepared statement
support.
Why would you want that, considering that native prepared statements are
supposed to be the best thing ever?
"Often postgresql will have to plan the query without knowing the parameters -
and it will choose a bad plan. In some cases it will plan based on the first
parameters you send. "
Ugh. So now we have a way to let you decide that you know better than the
pgsql query planner.
