Socket Functions
PHP Manual


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

socket_connectInitiates a connection on a socket


bool socket_connect ( resource $socket , string $address [, int $port = 0 ] )

Initiate a connection to address using the socket resource socket, which must be a valid socket resource 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.

See Also

Socket Functions
PHP Manual