The constants below are defined by this extension, and will only be available when the extension has either been compiled into PHP or dynamically loaded at runtime.
ALC_FREQUENCY
(int) ALC_REFRESH
(int) ALC_SYNC
(int) AL_FREQUENCY
(int) AL_BITS
(int) AL_CHANNELS
(int) AL_SIZE
(int) AL_BUFFER
(int) AL_SOURCE_RELATIVE
(int) AL_SOURCE_STATE
(int) AL_PITCH
(int) AL_GAIN
(int) AL_MIN_GAIN
(int) AL_MAX_GAIN
(int) AL_MAX_DISTANCE
(int) AL_ROLLOFF_FACTOR
(int) AL_CONE_OUTER_GAIN
(int) AL_CONE_INNER_ANGLE
(int) AL_CONE_OUTER_ANGLE
(int) AL_REFERENCE_DISTANCE
(int) AL_POSITION
(int) AL_VELOCITY
(int) AL_DIRECTION
(int) AL_ORIENTATION
(int) AL_FORMAT_MONO8
(int) AL_FORMAT_MONO16
(int) AL_FORMAT_STEREO8
(int) AL_FORMAT_STEREO16
(int) AL_INITIAL
(int) AL_PLAYING
(int) AL_PAUSED
(int) AL_STOPPED
(int) AL_LOOPING
(int) AL_TRUE
(int) AL_FALSE
(int)