php實現websocket即時訊息推送步驟詳解

這次給大家帶來php實現websocket即時訊息推送步驟詳解，php實現websocket即時訊息推送的注意事項有哪些，下面就是實戰案例，一起來看一下。

php實現websocket即時訊息推送，供大家參考，具體內容如下

SocketService.php

<?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(){    //擷取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, $line);          //擷取client ip          socket_getpeername ($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);          //在這裡業務代碼          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 $newClient socket   * @return int 接收到的資訊   */  public function handshaking($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));  }  /**   * 解析接收資料   * @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;  }  /**   * 發送資料   * @param $newClinet 新接入的socket   * @param $msg  要發送的資料   * @return int|string   */  public function send($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

<!doctype html><html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width,initial-scale=1, maximum-scale=1, user-scalable=no"> <title>websocket</title> </head> <body> <input id="text" value=""> <input type="submit" value="send" onclick="start()"> <input type="submit" value="close" onclick="close()"><p id="msg"></p> <script> /** 0：未串連1：串連成功，可通訊2：正在關閉3：串連已關閉或無法開啟*/  //建立一個webSocket 執行個體  var webSocket = new WebSocket("ws://192.168.31.152:8083");  webSocket.onerror = function (event){    onError(event);  };  // 開啟websocket  webSocket.onopen = function (event){    onOpen(event);  };  //監聽訊息  webSocket.onmessage = function (event){    onMessage(event);  };  webSocket.onclose = function (event){    onClose(event);  }  //關閉監聽websocket  function onError(event){    document.getElementById("msg").innerHTML = "<p>close</p>";    console.log("error"+event.data);  };  function onOpen(event){    console.log("open:"+sockState());    document.getElementById("msg").innerHTML = "<p>Connect to Service</p>";  };  function onMessage(event){    console.log("onMessage");    document.getElementById("msg").innerHTML += "<p>response:"+event.data+"</p>"  };  function onClose(event){    document.getElementById("msg").innerHTML = "<p>close</p>";    console.log("close:"+sockState());    webSocket.close();  }  function sockState(){    var status = ['未串連','串連成功，可通訊','正在關閉','串連已關閉或無法開啟'];      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 += "<p>request"+msg+"</p>"  };  function close(event){    webSocket.close();  } </script> </body></html>

相信看了本文案例你已經掌握了方法，更多精彩請關注php中文網其它相關文章！

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