php socket

1. client.php

/**
     * 发起socket请求
     */
    public function index() {

        error_reporting(E_ALL);
        set_time_limit(0);
        echo "<h2>TCP/IP Connection</h2>\n";
        $port =  22001;
        $ip = "127.0.0.1";
        /*
         +-------------------------------
        *    @socket连接整个过程
        +-------------------------------
        *    @socket_create
        *    @socket_connect
        *    @socket_write
        *    @socket_read
        *    @socket_close
        +--------------------------------
        */
        $socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
        if ($socket < 0) {
            echo "socket_create() failed: reason: " . socket_strerror($socket) . "\n";
        }else {
            echo "OK.\n";
        }
        echo "试图连接 '$ip' 端口 '$port'...\n";
        $result = socket_connect($socket, $ip, $port);
        if ($result < 0) {
            echo "socket_connect() failed.\nReason: ($result) " . socket_strerror($result) . "\n";
            }else {
            echo "连接OK\n";
        }

        $feedback = new Controller_Page_Cgb_feedback();
        $in = $feedback->cgbfeedBack();
        $out = '';
        if(!socket_write($socket, $in, strlen($in))) {
        echo "socket_write() failed: reason: " . socket_strerror($socket) . "\n";
        }else {
        echo "发送到服务器信息成功！\n";
        echo "发送的内容为:<font color='red'>$in</font> <br>";
        }
        while($out = socket_read($socket, 8192)) {
        self::errorSocktLog($out, __LINE__);
        }

        echo "关闭SOCKET...\n";
        socket_close($socket);
        echo "关闭OK\n";

1. 服务器端

class epoll{  
    private static $socket;  
    private static $connections;  
    private static $buffers;  
    function epoll($port){ 
    //判断libevent是否开启 
    if (!extension_loaded('libevent')) {
            die("Please install libevent extension firstly\n");
        } 

        self::$socket = stream_socket_server ('tcp://127.0.0.1:'.$port, $errno, $errstr);
        stream_set_blocking(self::$socket, 0);  
        $base = event_base_new();  
        $event = event_new();  
        event_set($event, self::$socket , EV_READ | EV_PERSIST, 'epoll::ev_accept', $base);  
        event_base_set($event, $base);  
        event_add($event);  
        event_base_loop($base);  

        self::$connections = array();  
        self::$buffers = array();  
    }  
    public static function ev_accept($socket, $flag, $base) {  
        static $id = 0;  
        $connection = stream_socket_accept($socket);  
        stream_set_blocking($connection, 0);  

        $id += 1;  

    //建立一个新的缓冲事件
        $buffer = event_buffer_new($connection, array(__CLASS__, 'ev_read'), array(__CLASS__, 'ev_write'), array(__CLASS__, 'ev_error'), $id);
        //关联事件的base
        event_buffer_base_set($buffer, $base);
        //给缓冲事件设定超时的缓冲事件
        event_buffer_timeout_set($buffer, 30, 30);
        //设计读写的水印标记
        event_buffer_watermark_set($buffer, EV_READ, 0, 0xffffff);
        //缓冲事件的优先级设定
        event_buffer_priority_set($buffer, 10);
        //启用一个指定的缓冲事件
        event_buffer_enable($buffer, EV_READ | EV_PERSIST);

        // we need to save both buffer and connection outside  
        self::$connections[$id] = $connection;  
        echo 'In-> $id='.$id.',$connection='.$connection."/n";  
        self::$buffers[$id] = $buffer;  
    }  
    public static function ev_error($buffer, $error, $id) {  
        event_buffer_disable(self::$buffers[$id], EV_READ | EV_WRITE);  
        event_buffer_free(self::$buffers[$id]);  
        echo 'Ot-> $id='.$id."/n";  
        fclose(self::$connections[$id]);  
        unset(self::$buffers[$id], self::$connections[$id]);  
    }  
    public static function ev_read($buffer, $id) {  
        static $ct=0;  
        static $ct_last=0;  
        while ($read = event_buffer_read($buffer, 256))  
        {  //接受的内容为
           echo  $ct_last = $read;        
        }
        $new = $ct_last.'ok';
        $len = strlen($new);

        // 返回响应
        //向缓冲事件写入数据
        $responseState = event_buffer_write($buffer, $new,$len);
        if ($responseState) {
            echo "Sent Bytes: $new \n";
        } else {
             echo "response error $len \n";
        }  
    }  
//       public  function errorSocktLog($data,$line) {
//          $fileNmae ="/var/log/gf.cgb.bestdo.com/socket.";
//          $path= $fileNmae.date("d").".log";
//           $test = "----".date('Y-m-d H:i:s',time())."----\r\n".$data."--第".$line."行--\r\n";
//              file_put_contents($path, $test,FILE_APPEND)   ;
//       }  
  }  
    new epoll(1088);