php[tek] 2017: Atlanta


(PHP 4 >= 4.1.0, PHP 5, PHP 7)

socket_getsocknameQueries the local side of the given socket which may either result in host/port or in a Unix filesystem path, dependent on its type


bool socket_getsockname ( resource $socket , string &$addr [, int &$port ] )

Note: socket_getsockname() should not be used with AF_UNIX sockets created with socket_connect(). Only sockets created with socket_accept() or a primary server socket following a call to socket_bind() will return meaningful values.



A valid socket resource created with socket_create() or socket_accept().


If the given socket is of type AF_INET or AF_INET6, socket_getsockname() will return the local IP address in appropriate notation (e.g. 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_getsockname() will return the Unix filesystem path (e.g. /var/run/daemon.sock) in the address parameter.


If provided, this will hold the associated port.

Return Values

Returns TRUE on success or FALSE on failure. socket_getsockname() 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.

See Also

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User Contributed Notes 2 notes

2 years ago
Curiously, getsockname() works for socket_create() and socket_create_pair() Unix-domain (AF_UNIX) sockets if one calls socket_bind() after creation to name the formerly anonymous socket(s). 

Using a socket_bind() call also results in a file system "file" (socket, first character 's' in an "ls -l" listing) being created with the given name.  Such a "file" will need to be removed explicitly, as closing the socket will not remove it.
not at valid dot com
9 years ago
Just a quick note:
I found socket_getsockname() is not IPv6 compatible or may just return some unexpected results?

Simple Code Example

$socket = socket_create(AF_INET,SOCK_STREAM,SOL_TCP);

socket_getsockname($socket, $IP, $PORT);



This does not print $IP or or even ... etc ... like you would expect ... in my case I receive witch is not a valid port on my system using IPv5 and IPv6! Thus you should rely on using the initial values of socket_bind() to get the local address.

Hope this helps...
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