PHP 4 >= 4.1.0, PHP 5, PHP 7, PHP 8
socket_connect - Initiates a connection on a socket

socket_connect( Socket$socket, string$address, [int|null$port = null] ): bool

Initiate a connection to address using the Socket instance socket, which must be Socket instance created with socket_create.



A Socket instance created with socket_create.


The address parameter is either an IPv4 address in dotted-quad notation (e.g. if socket is AF_INET, a valid IPv6 address (e.g. ::1) if IPv6 support is enabled and socket is AF_INET6 or the pathname of a Unix domain socket, if the socket family is AF_UNIX.


The port parameter is only used and is mandatory when connecting to an AF_INET or an AF_INET6 socket, and designates the port on the remote host to which a connection should be made.

Return Values

Returns true on success or false on failure. The error code can be retrieved with socket_last_error. This code may be passed to socket_strerror to get a textual explanation of the error.


If the socket is non-blocking then this function returns false with an error Operation now in progress.


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

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