*

* This function will set a callback function to be called for {@link http://www.php.net/manual/en/class.mongolog.php MongoLog} events * instead of triggering warnings. *

* @link http://www.php.net/manual/en/mongolog.setcallback.php * @param callable $log_function

* The function to be called on events. *

*

* The function should have the following prototype *

* * log_function ( int $module , int $level, string $message) *