(PHP 4 >= 4.1.0, PHP 5, PHP 7, PHP 8)
socket_getsockname — Queries the local side of the given socket which may either result in host/port or in a Unix filesystem path, dependent on its type
socket_getsockname(Socket $socket, string &$address, int &$port = null): bool
Note: socket_getsockname() should not be used with
AF_UNIXsockets 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.
socketA Socket instance created with socket_create() or socket_accept().
address 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. 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_getsockname() will return the Unix filesystem path (e.g. /var/run/daemon.sock) in the address parameter.
portIf provided, this will hold the associated port.
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.
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https://www.php.net/manual/en/function.socket-getsockname.php