©
本文檔使用 php中文網手册 發布
(PHP 4 >= 4.1.0, PHP 5)
socket_getpeername — Queries the remote side of the given socket which may either result in host/port or in a Unix filesystem path, dependent on its type
$socket
, string &$address
[, int &$port
] )Queries the remote side of the given socket which may either result in host/port or in a Unix filesystem path, dependent on its type.
socket
A valid socket resource created with socket_create() or socket_accept() .
address
If the given socket is of type AF_INET
or
AF_INET6
, socket_getpeername()
will return the peers (remote) IP address in
appropriate notation (e.g. 127.0.0.1 or
fe80::1) in the address
parameter and, if the optional port
parameter is
present, also the associated port.
If the given socket is of type AF_UNIX
,
socket_getpeername() will return the Unix filesystem
path (e.g. /var/run/daemon.sock) in the
address
parameter.
port
If given, this will hold the port associated to
address
.
成功时返回 TRUE
, 或者在失败时返回 FALSE
。 socket_getpeername() may also return
FALSE
if the socket type is not any of AF_INET
,
AF_INET6
, or AF_UNIX
, in which
case the last socket error code is not updated.
Note:
socket_getpeername() should not be used with
AF_UNIX
sockets created with socket_accept() . Only sockets created with socket_connect() or a primary server socket following a call to socket_bind() will return meaningful values.
Note:
For having socket_getpeername() to return a meaningful value, the socket it is applied upon must of course be one for which the concept of "peer" makes sense.
[#1] redph0enix at hotmail dot com [2003-09-09 20:57:18]
socket_getpeername will not work for UDP sockets. Instead, use socket_recvfrom - it provides the IP address and port of the source server - eg:
$size=socket_recvfrom($socket,$input,65535,0,$ipaddress,$port);
echo "Received [$input] ($size bytes) from IP $ipaddress Port $port\n";