php libevent 扩展使用示例

<?php
define('CONNECT_IN_MSG', chr(1));
define('CONNECT_OUT_MSG', chr(2));


class epoll{
    private static $socket;
    public static $connections;
    private static $buffers;
	//private static $msgs;
	public static $fd2pid = array();
	public static $blocked_ips = array();
	//private static $link_msg;
    function epoll($port, &$_msgs){//, &$_link_msg
		//self::$msgs = $_msgs;
		//self::$link_msg = $_link_msg;
        if($port<1024) die("Port must be a number which bigger than 1024\n");
        self::$socket = stream_socket_server ('tcp://0.0.0.0:'.$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();
		//echo __FILE__.'-'.__LINE__.'<br/>'.chr(10);
    }
    public static function ev_accept($socket, $flag, $base) {
		//echo __FILE__.'-'.__LINE__.'<br/>'.chr(10);
        static $id = 0;

        $connection = stream_socket_accept($socket);
        stream_set_blocking($connection, 0);
		list($remoteIP, $remotePort) = explode(':',stream_socket_get_name($connection,true));
		
        $id ++;

        $buffer = event_buffer_new($connection, 'epoll::ev_read', NULL, 'epoll::ev_error', $id);
        event_buffer_base_set($buffer, $base);
        event_buffer_timeout_set($buffer, 30, 30);
        event_buffer_watermark_set($buffer, EV_READ, 0, 0xffffff);
        event_buffer_priority_set($buffer, 60);//超时自动断开时间
        event_buffer_enable($buffer, EV_READ | EV_PERSIST);

        // we need to save both buffer and connection outside
        self::$connections[$id] = $connection;
        self::$buffers[$id] = $buffer;
		//self::$link_msg->send(CONNECT_IN_MSG.$remoteIP.','.$remotePort, $id);
		
		self::$fd2pid[$id] = 0;
        //echo 'In-> $id='.$id.',$connection='.$connection."\n";
    }
    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";
		//self::$link_msg->send(CONNECT_OUT_MSG, $id);
        fclose(self::$connections[$id]);
		unset(self::$fd2pid[$id]);
        unset(self::$buffers[$id], self::$connections[$id]);
    }
    public static function ev_read($buffer, $id) {
		//echo __FILE__.'-'.__LINE__.'<br/>'.chr(10);
        static $ct=0;
        while ($read = event_buffer_read($buffer, 256))
        {
            $ct+=strlen($read);
            if(strpos($read,'ct')!==false) echo 'Ct=>'.count(self::$connections).'\n';
			$mid = self::$fd2pid[$id];
			//self::$msgs[$mid]->send($read , $id);
        }
    }

}