이 확장은 다음의 상수들을 정의합니다. 이 확장을 PHP에 내장했거나, 실행시에 동적으로 읽어들일 경우에만 사용할 수 있습니다.
ALC_FREQUENCY
(integer)
ALC_REFRESH
(integer)
ALC_SYNC
(integer)
AL_FREQUENCY
(integer)
AL_BITS
(integer)
AL_CHANNELS
(integer)
AL_SIZE
(integer)
AL_BUFFER
(integer)
AL_SOURCE_RELATIVE
(integer)
AL_SOURCE_STATE
(integer)
AL_PITCH
(integer)
AL_GAIN
(integer)
AL_MIN_GAIN
(integer)
AL_MAX_GAIN
(integer)
AL_MAX_DISTANCE
(integer)
AL_ROLLOFF_FACTOR
(integer)
AL_CONE_OUTER_GAIN
(integer)
AL_CONE_INNER_ANGLE
(integer)
AL_CONE_OUTER_ANGLE
(integer)
AL_REFERENCE_DISTANCE
(integer)
AL_POSITION
(integer)
AL_VELOCITY
(integer)
AL_DIRECTION
(integer)
AL_ORIENTATION
(integer)
AL_FORMAT_MONO8
(integer)
AL_FORMAT_MONO16
(integer)
AL_FORMAT_STEREO8
(integer)
AL_FORMAT_STEREO16
(integer)
AL_INITIAL
(integer)
AL_PLAYING
(integer)
AL_PAUSED
(integer)
AL_STOPPED
(integer)
AL_LOOPING
(integer)
AL_TRUE
(integer)
AL_FALSE
(integer)