$ /path/to/phpize
$ ./configure --with-php-config=/path/to/php-config
$ make && make install

$ pecl install Druid

<?php
/**
 * @author neeke@php.net
 * Date: 16/12/21 下午8:38
 */

try {

    $Druid_1 = Druid::getInstance(Druid::DRUID_INSTANCE_DEFAULT);
    $Druid_1->debugWitch(TRUE);

    /**
     * you can also use default host with druid.host in php.ini/druid.ini
     */
    $aHosts = array("http://10.0.3.46:9082/druid/v2/", "http://10.0.3.46:9082/druid/v2/");
    $Druid_1->setDruidHosts($aHosts);

    /**
     * demo 1
     *
     * use tpl build request json
     */
    $Druid_1->setTplPath(__DIR__ . '/tpl');
    $result_1 = $Druid_1->getDataByTpl('request_tpl_demo.json', array('@startTimeToEndTime@' => '["2016-12-10T14:06:00.000Z/2016-12-27T14:36:00.000Z"]'));


    $Druid_2 = Druid::getInstance('druid_2_instance');
    /**
     * demo 2
     *
     * use full request json
     */
    $result_2 = $Druid_2->getData(file_get_contents(__DIR__ . '/tpl/request_full_demo.json'));

    var_dump($result_1, $result_2);
    var_dump($Druid_1,$Druid_2);
} catch (Exception $e) {
    var_dump($e->getCode(), $e->getMessage(), $Druid_1->getDebugInfo(), $Druid_2->getDebugInfo());
}

Extension [ <persistent> extension #30 Druid version 1.0.0 ] {

  - Dependencies {
    Dependency [ json (Required) ]
  }

  - INI {
    Entry [ druid.host <SYSTEM> ]
      Current = ''
    }
    Entry [ druid.base_auth_user <PERDIR> ]
      Current = ''
    }
    Entry [ druid.base_auth_passport <PERDIR> ]
      Current = ''
    }
    Entry [ druid.tpl_path <PERDIR> ]
      Current = '/data/php-druid/tpl'
    }
    Entry [ druid.debug <ALL> ]
      Current = '0'
    }
    Entry [ druid.curl_dns_cache_timeout <ALL> ]
      Current = '1'
    }
    Entry [ druid.curl_connect_timeout <ALL> ]
      Current = '3'
    }
    Entry [ druid.curl_timeout <ALL> ]
      Current = '5'
    }
  }

  - Classes [1] {
    Class [ <internal:Druid> class Druid ] {

      - Constants [3] {
        Constant [ public string DRUID_VERSION ] { 1.0.0 }
        Constant [ public string DRUID_CONTENT_TYPE ] { Content-Type:application/json }
        Constant [ public string DRUID_INSTANCE_DEFAULT ] { default }
      }

      - Static properties [1] {
        Property [ protected static $Druid ]
      }

      - Static methods [1] {
        Method [ <internal:Druid> static public method getInstance ] {

          - Parameters [1] {
            Parameter #0 [ <required> $instance_name ]
          }
        }
      }

      - Properties [8] {
        Property [ <default> protected $debug ]
        Property [ <default> protected $tpl_path ]
        Property [ <default> protected $response_debug_info ]
        Property [ <default> protected $response_code ]
        Property [ <default> protected $_curl_error_no ]
        Property [ <default> protected $_curl_error_str ]
        Property [ <default> protected $hosts ]
        Property [ <default> protected $host_rand ]
      }

      - Methods [14] {
        Method [ <internal:Druid, ctor> private method __construct ] {

          - Parameters [0] {
          }
        }

        Method [ <internal:Druid> private method __clone ] {
        }

        Method [ <internal:Druid> private method __sleep ] {
        }

        Method [ <internal:Druid> private method
``` Данный текст написан на языке PHP.

/**
 * @var Druid
 */
static private $Druid = null;

/**
 * @return Druid
 */
static public function getInstance($instance_name) {
    if (self::$Druid == null) {
        self::$Druid = array();
    }

    if (!array_key_exists($instance_name, self::$Druid)) {
        self::$Druid[$instance_name] = new self();
    }

    return self::$Druid[$instance_name];
}

/**
 * Druid constructor.
 */
private function __construct() {

}

public function __destruct() {

}

private function __clone() {

}

private function __sleep() {

}

private function __wakeup() {

}

/**
 * @param $bool
 *
 * @return bool
 */
public function debugWitch($bool) {
    return true;
}

/**
 * @return bool
 */
public function getDebugWitch() {
    return true;
}

/**
 * @param array $array
 *
 * @return bool
 */
public function setDruidHosts(array $array) {
    return true;
}

/**
 * @return array
 */
public function getDruidHosts() {
    return array();
}

/**
 * @param $tpl_path
 *
 * @return bool
 */
public function setTplPath($tpl_path) {
    return true;
}

/**
 * @return string
 */
public function getTplPath() {
    return '';
}

/**
 * @param       $request_json
 * @param array $array
 *
 * @return array
 */
public function getData($request_json, array $array = array()) {
    return array();
}

/**
 * @param       $request_json_tpl
 * @param array $array
 *
 * @return array
 */
public function getDataByTpl($request_json_tpl, array $array = array()) {
    return array();
}

/**
 * @return array
 */
public function getDebugInfo() {
    return array();
}