socket_sendto

(PHP 4 >= 4.1.0, PHP 5, PHP 7, PHP 8)

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

说明

socket_sendto(
    Socket $socket,
    string $data,
    int $length,
    int $flags,
    string $address,
    ?int $port = null
): int|false

The function socket_sendto() sends length bytes from data through the socket socket to the port at the address address.

参数

socket

A Socket instance created using socket_create().

data

The sent data will be taken from buffer data.

length

length bytes from data will be sent.

flags

The value of flags can be any combination of the following flags, joined with the binary OR (|) operator.

**Possible values for `flags`**
`MSG_OOB`	Send OOB (out-of-band) data.
`MSG_EOR`	Indicate a record mark. The sent data completes the record.
`MSG_EOF`	Close the sender side of the socket and include an appropriate notification of this at the end of the sent data. The sent data completes the transaction.
`MSG_DONTROUTE`	Bypass routing, use direct interface.

address

IP address of the remote host.

port

port is the remote port number at which the data will be sent.

返回值

socket_sendto() returns the number of bytes sent to the remote host, or false if an error occurred.

更新日志

版本	说明
8.0.0	现在 `socket` 是 Socket 实例，之前是 resource。
8.0.0	`port` is nullable now.

范例

示例 #1 socket_sendto() Example


<?php
    $sock = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP);

    $msg = "Ping !";
    $len = strlen($msg);

    socket_sendto($sock, $msg, $len, 0, '127.0.0.1', 1223);
    socket_close($sock);
?>

参见

socket_send() - Sends data to a connected socket

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User Contributed Notes 1 note

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ole_DOT_omland_AT_gmail_DOT_com ¶

16 years ago


Here's how you can make an udp broadcast, useful sometimes, and does seem hard to figure out hwo to do..


<?php

$sock = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP);

socket_set_option($sock, SOL_SOCKET, SO_BROADCAST, 1);

socket_sendto($sock, $broadcast_string, strlen($broadcast_string), 0, '255.255.255.255', $port);

?>

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备份地址：http://www.lvesu.com/blog/php/function.socket-sendto.php