Php/docs/mongolog.getcallback
From Get docs
MongoLog::getCallback
(PECL mongo >= 1.3.0)
MongoLog::getCallback — Gets the previously set callback function
Parameters
This function has no parameters.
Return Values
Returns the callback function, or FALSE
if not set yet.
Notes
Caution This function is only available with PHP 5.3.0 and later.