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Sends a message to a socket, whether it is connected or not (PHP 5)
int stream_socket_sendto ( resource socket, string data [, int flags [, string address]] )

The function stream_socket_sendto() sends the data specified by data through the socket specified by socket. The address specified when the socket stream was created will be used unless an alternate address is specified in address.

The value of flags can be any combination of the following:

Table 308. possible values for flags

STREAM_OOB Process OOB (out-of-band) data.

Example 2390. stream_socket_sendto() Example

/* Open a socket to port 1234 on localhost */
$socket = stream_socket_client('tcp://');

/* Send ordinary data via ordinary channels. */
fwrite($socket, "Normal data transmit.");

/* Send more data out of band. */
stream_socket_sendto($socket, "Out of Band data.", STREAM_OOB);

/* Close it up */

See also stream_socket_recvfrom(), stream_socket_client(), and stream_socket_server().