php實現websocket實時消息推送，供大家參考，具體內容如下

SocketService.php

/**

* Created by xwx

* Date: 2017/10/18

* Time: 14:33

*/

class SocketService

{

private $address = '0.0.0.0';

private $port = 8083;

private $_sockets;

public function __construct($address = '', $port='')

{

if(!empty($address)){

$this->address = $address;

}

if(!empty($port)) {

$this->port = $port;

}

}

public function service(){

//獲取tcp協議號碼。

$tcp = getprotobyname("tcp");

$sock = socket_create(AF_INET, SOCK_STREAM, $tcp);

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

if($sock < 0)

{

throw new Exception("failed to create socket: ".socket_strerror($sock)."\n");

}

socket_bind($sock, $this->address, $this->port);

socket_listen($sock, $this->port);

echo "listen on $this->address $this->port ... \n";

$this->_sockets = $sock;

}

public function run(){

$this->service();

$clients[] = $this->_sockets;

while (true){

$changes = $clients;

$write = NULL;

$except = NULL;

socket_select($changes, $write, $except, NULL);

foreach ($changes as $key => $_sock){

if($this->_sockets == $_sock){ //判斷是不是新接入的socket

if(($newClient = socket_accept($_sock)) === false){

die('failed to accept socket: '.socket_strerror($_sock)."\n");

}

$line = trim(socket_read($newClient, 1024));

$this->handshaking($newClient, $line);

//獲取client ip

socket_getpeername ($newClient, $ip);

$clients[$ip] = $newClient;

echo "Client ip:{$ip} \n";

echo "Client msg:{$line} \n";

} else {

socket_recv($_sock, $buffer, 2048, 0);

$msg = $this->message($buffer);

//在這里業務代碼

echo "{$key} clinet msg:",$msg,"\n";

fwrite(STDOUT, 'Please input a argument:');

$response = trim(fgets(STDIN));

$this->send($_sock, $response);

echo "{$key} response to Client:".$response,"\n";

}

}

}

}

/**

* 握手處理

* @param $newClient socket

* @return int 接收到的信息

*/

public function handshaking($newClient, $line){

$headers = array();

$lines = preg_split("/\r\n/", $line);

foreach($lines as $line)

{

$line = chop($line);

if(preg_match('/\A(\S+): (.*)\z/', $line, $matches))

{

$headers[$matches[1]] = $matches[2];

}

}

$secKey = $headers['Sec-WebSocket-Key'];

$secAccept = base64_encode(pack('H*', sha1($secKey . '258EAFA5-E914-47DA-95CA-C5AB0DC85B11')));

$upgrade = "HTTP/1.1 101 Web Socket Protocol Handshake\r\n" .

"Upgrade: websocket\r\n" .

"Connection: Upgrade\r\n" .

"WebSocket-Origin: $this->address\r\n" .

"WebSocket-Location: ws://$this->address:$this->port/websocket/websocket\r\n".

"Sec-WebSocket-Accept:$secAccept\r\n\r\n";

return socket_write($newClient, $upgrade, strlen($upgrade));

}

/**

* 解析接收數據

* @param $buffer

* @return null|string

*/

public function message($buffer){

$len = $masks = $data = $decoded = null;

$len = ord($buffer[1]) & 127;

if ($len === 126) {

$masks = substr($buffer, 4, 4);

$data = substr($buffer, 8);

} else if ($len === 127) {

$masks = substr($buffer, 10, 4);

$data = substr($buffer, 14);

} else {

$masks = substr($buffer, 2, 4);

$data = substr($buffer, 6);

}

for ($index = 0; $index < strlen($data); $index++) {

$decoded .= $data[$index] ^ $masks[$index % 4];

}

return $decoded;

}

/**

* 發送數據

* @param $newClinet 新接入的socket

* @param $msg 要發送的數據

* @return int|string

*/

public function send($newClinet, $msg){

$msg = $this->frame($msg);

socket_write($newClinet, $msg, strlen($msg));

}

public function frame($s) {

$a = str_split($s, 125);

if (count($a) == 1) {

return "\x81" . chr(strlen($a[0])) . $a[0];

}

$ns = "";

foreach ($a as $o) {

$ns .= "\x81" . chr(strlen($o)) . $o;

}

return $ns;

}

/**

* 關閉socket

*/

public function close(){

return socket_close($this->_sockets);

}

}

$sock = new SocketService();

$sock->run();

web.html

websocket

/**

0：未連接

1：連接成功，可通訊

2：正在關閉

3：連接已關閉或無法打開

*/

//創建一個webSocket 實例

var webSocket = new WebSocket("ws://192.168.31.152:8083");

webSocket.onerror = function (event){

onError(event);

};

// 打開websocket

webSocket.onopen = function (event){

onOpen(event);

};

//監聽消息

webSocket.onmessage = function (event){

onMessage(event);

};

webSocket.onclose = function (event){

onClose(event);

}

//關閉監聽websocket

function onError(event){

document.getElementById("msg").innerHTML = "

close

";

console.log("error"+event.data);

};

function onOpen(event){

console.log("open:"+sockState());

document.getElementById("msg").innerHTML = "

Connect to Service

";

};

function onMessage(event){

console.log("onMessage");

document.getElementById("msg").innerHTML += "

response:"+event.data+"

"

};

function onClose(event){

document.getElementById("msg").innerHTML = "

close

";

console.log("close:"+sockState());

webSocket.close();

}

function sockState(){

var status = ['未連接','連接成功，可通訊','正在關閉','連接已關閉或無法打開'];

return status[webSocket.readyState];

}

function start(event){

console.log(webSocket);

var msg = document.getElementById('text').value;

document.getElementById('text').value = '';

console.log("send:"+sockState());

console.log("msg="+msg);

webSocket.send("msg="+msg);

document.getElementById("msg").innerHTML += "

request"+msg+"

"

};

function close(event){

webSocket.close();

}

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