(PECL openal >= 0.1.0)
openal_listener_get — Retrieve a listener property
property
Property to retrieve, one of:
AL_GAIN (float),
AL_POSITION (array(float,float,float)),
AL_VELOCITY (array(float,float,float)) 그리고
AL_ORIENTATION (array(float,float,float)).
Returns a float or array of floats (as appropriate)실패 시 FALSE를 반환합니다.