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。

YPERR_ACCESS ( integer)

access violation (this has only been added recently and is only available from PECL SVN for now)

YPERR_BADARGS ( integer)

The function arguments are bad

YPERR_BADDB ( integer)

YP database is bad

YPERR_BUSY ( integer)

Database busy

YPERR_DOMAIN ( integer)

cannot bind to server in this domain

YPERR_KEY ( integer)

no such key in map

YPERR_MAP ( integer)

no such map in server's domain

YPERR_NODOM ( integer)

Local domain name not set

YPERR_NOMORE ( integer)

No more records in map database

YPERR_PMAP ( integer)

Can't communicate with portmapper

YPERR_RESRC ( integer)

resource allocation failure

YPERR_RPC ( integer)

RPC failure - domain has been unbound

YPERR_YPBIND ( integer)

Can't communicate with ypbind

YPERR_YPERR ( integer)

internal yp server or client error

YPERR_YPSERV ( integer)

Can't communicate with ypserv

YPERR_VERS ( integer)

YP version mismatch