JosnRpcClient

<?php

/**
 * Simple JSON-RPC interface.
 */
 namespace org;

class JosnRpcClient
{
    protected $host;
    protected $port;
    protected $version;
    protected $debug;
    protected $id = 0;

    /**
     * 初始化数据
     * @param $host     主机IP
     * @param $port     端口
     * @param $debug    debug模式(true or false)
     * @param $version  jsonrpc 版本号
     * @param bool $debug
     */
    public function __construct($host, $port, $debug = false, $version = "2.0")
    {
        $this->host = $host;
        $this->port = $port;
        $this->version = $version;
        $this->debug = $debug;
    }

    /**
     * 请求核心方法
     * @param $method  回调方法名
     * @param $params  参数数组
     * @return array   返回结果数组
     */
    public function request($method, $params=array())
    {
        // 检验request信息
        if (!is_scalar($method)) {
            throw new \think\Exception('Method name has no scalar value');
        }
        if (is_array($params)) {
            $params = array_values($params);
        } else {
            throw new \think\Exception('Params must be given as array');
        }

        // 封装请求数据
        $request = json_encode(array(
            'jsonrpc' => $this->version,
            'method' => $method,
            'params' => $params,
            'id'     => $this->id++
        ));

        // 是否是debug模式
        $this->debug && $this->debug.='***** Request *****'."\n".$request."\n".'***** End Of request *****'."\n\n";

        // curl请求
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $this->host);
        curl_setopt($ch, CURLOPT_PORT, $this->port);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/json'));
        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $request);

        $ret = curl_exec($ch);

        // 输出调试信息
        if ($this->debug) {
            echo nl2br(($this->debug));
        }

        if ($ret !== false) {
            $response = json_decode($ret);

            if (isset($response->error)) {
                //throw new RPCException($formatted->error->message, $formatted->error->code);
                throw new \think\Exception('Request error: '.$response->error);
            } else {
                return $response;
            }
        } else {
            throw new \think\Exception("Server did not respond: ".$this->host.':'.$this->port);
        }
    }
}
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