/**
* @var array 设置http头部信息
*/
public $httpHeader = ["Content-Type:application/json"];


/**
* @var int $timeout 超时时间
*/
protected $timeout = 10;

/**
* @var mixed curl域名地址
*/
protected $curlDomain;

/**
* @var string 请求参数格式
*/
public $format = self::FORMAT_RAW;

const FORMAT_RAW = 'raw';
const FORMAT_HTML = 'html';
const FORMAT_JSON = 'json';
const FORMAT_JSONP = 'jsonp';
const FORMAT_XML = 'xml';

/**
* get请求
* @param $url
* @param $params
* @return bool|mixed
*/
public function curl_get($url, $params)
{
  if (!is_string($url) || empty($url) || !is_string('get')) return false;
  self::filter_url($url);
  $ch = curl_init();

  curl_setopt($ch, CURLOPT_HTTPHEADER, $this->httpHeader);//定义header
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

  if ($params && !empty($params)) {
    $param = '?';
    foreach ($params as $k => $v) {
      $param .= $k . '=' . $v . '&&';
    }
    $param = substr($param, 0, strlen($param) - 2);
    $url = $url . $param;
  }


  curl_setopt($ch, CURLOPT_URL, $url);
  //debug调试模式下不设置请求超时时间
  if (config('app_debug')) {
    curl_setopt($ch, CURLOPT_TIMEOUT, 0xFFFFfff);
  } else {
    curl_setopt($ch, CURLOPT_TIMEOUT, $this->timeout);
  }

  $result = curl_exec($ch);
  $errors = curl_error($ch);
  curl_close($ch);
  if (!empty($errors)) {
    exit(ajaxErr(1001));
  }
  return json_decode($result);
}


/**
* post请求
* @param $url
* @param $params
* @return bool|mixed
*/
public function curl_post($url, $params)
{
  if (!is_string($url) || empty($url) || !is_string('post')) return false;
  self::filter_url($url);
  $ch = curl_init();

  curl_setopt($ch, CURLOPT_HTTPHEADER, $this->httpHeader);//定义header
  curl_setopt($ch, CURLOPT_POST, 1); //定义提交类型 1：POST ；0：GET
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  if ($params && !empty($params)) {
    if ($this->format == self::FORMAT_RAW)
      $params = json_encode($params);
  }
  curl_setopt($ch, CURLOPT_POSTFIELDS, $params);//定义提交的数据

  curl_setopt($ch, CURLOPT_URL, $url);
  //debug调试模式下不设置请求超时时间
  if (config('app_debug')) {
    curl_setopt($ch, CURLOPT_TIMEOUT, 0xFFFFfff);
  } else {
    curl_setopt($ch, CURLOPT_TIMEOUT, $this->timeout);
  }

  $result = curl_exec($ch);
  $errors = curl_error($ch);
  curl_close($ch);
  if (!empty($errors)) {
    exit(ajaxErr(1001));
  }
  return json_decode($result);
}

/**
* put请求
* @param $url
* @param $params
* @return bool|mixed
*/
public function curl_put($url, $params)
{
  if (!is_string($url) || empty($url) || !is_string('put')) return false;
  self::filter_url($url);
  $ch = curl_init();

  curl_setopt($ch, CURLOPT_HTTPHEADER, $this->httpHeader);
  curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "put");
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  if ($params && !empty($params)) {
    if ($this->format == self::FORMAT_RAW)
      $params = json_encode($params);
  }
  curl_setopt($ch, CURLOPT_POSTFIELDS, $params);//定义提交的数据

  curl_setopt($ch, CURLOPT_URL, $url);
  //debug调试模式下不设置请求超时时间
  if (config('app_debug')) {
    curl_setopt($ch, CURLOPT_TIMEOUT, 0xFFFFfff);
  } else {
    curl_setopt($ch, CURLOPT_TIMEOUT, $this->timeout);
  }


  $result = curl_exec($ch);
  $errors = curl_error($ch);
  curl_close($ch);
  if (!empty($errors)) {
    exit(ajaxErr(1001));
  }
  return json_decode($result);
}


/**
* delete请求
* @param $url
* @param $params
* @return bool|mixed
*/
public function curl_delete($url, $params)
{
  if (!is_string($url) || empty($url) || !is_string('delete')) return false;
  self::filter_url($url);
  $ch = curl_init();

  curl_setopt($ch, CURLOPT_HTTPHEADER, $this->httpHeader);
  curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "delete");
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  if ($params && !empty($params)) {
    $param = '?';
    foreach ($params as $k => $v) {
      $param .= $k . '=' . $v . '&&';
    }
    $param = substr($param, 0, strlen($param) - 2);
    $url = $url . $param;
  }

  curl_setopt($ch, CURLOPT_URL, $url);
  //debug调试模式下不设置请求超时时间
  if (config('app_debug')) {
    curl_setopt($ch, CURLOPT_TIMEOUT, 0xFFFFfff);
  } else {
    curl_setopt($ch, CURLOPT_TIMEOUT, $this->timeout);
  }

  $result = curl_exec($ch);
  $errors = curl_error($ch);
  curl_close($ch);
  if (!empty($errors)) {
    exit(ajaxErr(1001));
  }
  return json_decode($result);
}


/**
* 请求url地址前缀过滤
* Author: huxinlu
* @param $url
*/
private function filter_url(&$url)
{
  if (substr($url, 0, 5) !== 'http:' && substr($url, 0, 6) !== 'https:') {
      if (substr($url, 0, 1) == '/') {
        $url = substr($url, 1, strlen($url) - 1);
      }
      $url = $this->curlDomain . $url;
  }
}