socket_getpeername

Queries the remote side of the given socket

Description

bool socket_getpeername(Socket $socket, string &$address, int &$port = null)

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.

Parameters

socket

A Socket instance 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.

Return Values

Returns true on success or false on failure. 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.

Changelog

Version Description
8.0.0 socket is a Socket instance now; previously, it was a resource.

Notes

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.

See Also

  • socket_getsockname
  • socket_last_error
  • socket_strerror