(PECL openal >= 0.1.0)
openal_source_set — Set source property
sourceAn Open AL(Source) resource (previously created by openal_source_create()).
property
      Property to set, one of:
      AL_BUFFER (OpenAL(Source)),
      AL_LOOPING (bool),
      AL_SOURCE_RELATIVE (int),
      AL_SOURCE_STATE (int),
      AL_PITCH (float),
      AL_GAIN (float),
      AL_MIN_GAIN (float),
      AL_MAX_GAIN (float),
      AL_MAX_DISTANCE (float),
      AL_ROLLOFF_FACTOR (float),
      AL_CONE_OUTER_GAIN (float),
      AL_CONE_INNER_ANGLE (float),
      AL_CONE_OUTER_ANGLE (float),
      AL_REFERENCE_DISTANCE (float),
      AL_POSITION (array(float,float,float)),
      AL_VELOCITY (array(float,float,float)),
      AL_DIRECTION (array(float,float,float)).
     
setting
      Value to assign to specified property.
      Refer to the description of property
      for a description of the value(s) expected.
     
   Returns TRUE on success or FALSE on failure.