(PECL openal:0.1)
openal_listener_set — Set a listener property
Property to set, one of: AL_GAIN (float), AL_POSITION (array(float,float,float)), AL_VELOCITY (array(float,float,float)) 和 AL_ORIENTATION (array(float,float,float)).
Value to set, either float, or an array of floats as appropriate.
如果成功则返回 TRUE，失败则返回 FALSE。