预定义常量

下列常量由此扩展定义，且仅在此扩展编译入 PHP 或在运行时动态载入时可用。

IN_ACCESS (integer): File was accessed (read) (*)
IN_MODIFY (integer): File was modified (*)
IN_ATTRIB (integer): Metadata changed (e.g. permissions, mtime, etc.) (*)
IN_CLOSE_WRITE (integer): File opened for writing was closed (*)
IN_CLOSE_NOWRITE (integer): File not opened for writing was closed (*)
IN_OPEN (integer): File was opened (*)
IN_MOVED_TO (integer): File moved into watched directory (*)
IN_MOVED_FROM (integer): File moved out of watched directory (*)
IN_CREATE (integer): File or directory created in watched directory (*)
IN_DELETE (integer): File or directory deleted in watched directory (*)
IN_DELETE_SELF (integer): Watched file or directory was deleted
IN_MOVE_SELF (integer): Watch file or directory was moved
IN_CLOSE (integer): Equals to IN_CLOSE_WRITE | IN_CLOSE_NOWRITE
IN_MOVE (integer): Equals to IN_MOVED_FROM | IN_MOVED_TO
IN_ALL_EVENTS (integer): Bitmask of all the above constants
IN_UNMOUNT (integer): File system containing watched object was unmounted
IN_Q_OVERFLOW (integer): Event queue overflowed (wd is -1 for this event)
IN_IGNORED (integer): Watch was removed (explicitly by inotify_rm_watch() or because file was removed or filesystem unmounted
IN_ISDIR (integer): Subject of this event is a directory
IN_ONLYDIR (integer): Only watch pathname if it is a directory (Since Linux 2.6.15)
IN_DONT_FOLLOW (integer): Do not dereference pathname if it is a symlink (Since Linux 2.6.15)
IN_MASK_ADD (integer): Add events to watch mask for this pathname if it already exists (instead of replacing mask).
IN_ONESHOT (integer): Monitor pathname for one event, then remove from watch list.

Note: The events marked with an asterisk (*) above can occur for files in watched directories.