# stream_socket_sendto

(PHP 5, PHP 7)

stream_socket_sendto — Sends a message to a socket, whether it is connected or not

### 说明

stream_socket_sendto ( resource `$socket` , string `$data` [, int `$flags` = 0 [, string `$address` ]] ) : int

Sends the specified `data` through the `socket`.

### 参数

`socket`

  The socket to send `data` to.

`data`

  The data to be sent.

`flags`

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

  possible values for `flags`
  `STREAM_OOB` | Process OOB (out-of-band) data.

`address`

  The address specified when the socket stream was created will be used unless an alternate address is specified in `address`.

  If specified, it must be in dotted quad (or [ipv6]) format.

### 返回值

Returns a result code, as an integer.

### 范例

Example #1 stream_socket_sendto() Example

    <?php
    /* Open a socket to port 1234 on localhost */
    $socket = stream_socket_client('tcp://127.0.0.1:1234');

    /* 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 */
    fclose($socket);
    ?>

### 参见

- stream_socket_recvfrom() - Receives data from a socket, connected or not
- stream_socket_client() - Open Internet or Unix domain socket connection
- stream_socket_server() - Create an Internet or Unix domain server socket