PHP curl get post通用类

<?php
/**
 * @author:xiaojiang
 * curl 通用方法 。。get /post 传送数据
 */
 class process{

      const GET = 0;
      const POST = 1;
      public $url;
      public $ch = null;
      private $type = 1; 

      public function __construct( $url , $type = self::POST){
            $this->url = $url;
            $this->ch = curl_init();
            $this->type = $type;
      }

      //设置发送方式 0 get 1 post
      public function setType( $type  ){
          $this->tyep = $type;
      }
     //post 方式传递数据
      public function send( $param ){
          if( self::POST == $this->type)
              return $this->posts( $param );
          else
              return $this->gets( $param );
      }

      public function posts( $post_data ){

        curl_setopt( $this->ch, CURLOPT_URL, $this->url );
        curl_setopt( $this->ch, CURLOPT_RETURNTRANSFER, 1 );
        curl_setopt( $this->ch, CURLOPT_HEADER, 0 );
        curl_setopt($this->ch, CURLOPT_POST, 1);
        curl_setopt($this->ch, CURLOPT_POSTFIELDS, $post_data);
        $output = curl_exec( $this->ch );
        return $output;
      }

      public function gets( $get_data ){

          $url = $this->url.'?'.http_build_query($get_data);
          curl_setopt( $this->ch, CURLOPT_URL, $url );
          curl_setopt( $this->ch, CURLOPT_RETURNTRANSFER, 1 );
          curl_setopt( $this->ch, CURLOPT_HEADER, 0 );
          $output = curl_exec( $this->ch );
          return $output;

      }

 }