I have no clue if this is possible, however, it would be nice to have
the option to (without restarting PHP engines) force the PHP engines
to drop all their pconnect'ed resources.

For example, we may have a hung MSSQL resource, or just want to force
a reconnect. I am not sure php-fpm reload (graceful) does this. I am
wondering if there is the possibility for this option, if it makes
sense, or if graceful reload already does it?

Thanks.