(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)) and
      AL_ORIENTATION (array(float,float,float)).
     
   Returns a float or array of floats (as appropriate) or FALSE on failure.