NIS (formerly called Yellow Pages) allows network management of important administrative files (e.g. the password file). For more information refer to the NIS manpage and The Linux NIS(YP)/NYS/NIS+ HOWTO. There is also a book called Managing NFS and NIS by Hal Stern.
注: This extension is not available on Windows platforms.
None besides functions from standard Unix libraries which are always available (either libc or libnsl, configure will detect which one to use).
以下的常數由此延伸定義, 只在這個延伸被編譯成PHP或實行時期被動態載入時有效。