Php/docs/reflectionparameter.ispassedbyreference
From Get docs
ReflectionParameter::isPassedByReference
(PHP 5, PHP 7)
ReflectionParameter::isPassedByReference — Checks if passed by reference
Description
public ReflectionParameter::isPassedByReference ( ) : bool
Checks if the parameter is passed in by reference.
Warning This function is currently not documented; only its argument list is available.
Parameters
This function has no parameters.
Return Values
TRUE
if the parameter is passed in by reference, otherwise FALSE