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PHP实现websocket实时消息推送，供大家参考，具体内容如下

SocketService.PHP

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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(){

//获取tcp协议号码。

$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){ //判断是不是新接入的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);

//获取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);

//在这里业务代码

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";

}

}

}

}
/**

握手处理
@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));
}
/**

解析接收数据
@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,10,14);

} else {

$masks = substr($buffer,2,6);

}

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

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

}

return $decoded;

}

/**

发送数据
@param $newClinet 新接入的socket
@param $msg  要发送的数据
@return int|string

*/

public function send($newClinet,$msg){

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

socket_write($newClinet,strlen($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;

}
/**

关闭socket

*/

public function close(){

return socket_close($this->_sockets);

}

}

$sock = new SocketService();

$sock->run();

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