<?php
/**
 * Created by PhpStorm.
 * User: FZS
 * Time: 2019/3/15 17:50
 */
//----------------------------------
// 聚合 图书内容 调用类
//----------------------------------
class freeApi{
    private $apiKey = false; //聚合appkey
    private $apiUrl = 'http://apis.juhe.cn/goodbook/query';
    public function __construct($apikey){
        $this->apiKey = $apikey;
    }
    /**
     * 将JSON内容转为数据，并返回
     * @param string $content [内容]
     * @return array
     */
    public function returnArray($content){
        return json_decode($content,true);
    }
    /**
     * 获取 图书内容 结果
     * @return array
     */
    public function getResult(){
        $params = [
            "key" => $this->apiKey,//应用APPKEY(应用详细页查询)
            "catalog_id" => "",//目录编号
            "pn" => "",//数据返回起始
            "rn" => "",//数据返回条数，最大30
            "dtype" => "",//返回数据的格式,xml或json，默认json
        ];
        $params = http_build_query($params);
        return $this->returnArray($this->freeApiCurl($this->apiUrl,$params,1));
    }
    /**
     * 请求接口返回内容
     * @param  string $url [请求的URL地址]
     * @param  string $params [请求的参数]
     * @param  int $ipost [是否采用POST形式]
     * @return  string
     */
    public function freeApiCurl($url,$params=false,$ispost=0){
        $ch = curl_init();
        curl_setopt( $ch, CURLOPT_HTTP_VERSION , CURL_HTTP_VERSION_1_1 );
        curl_setopt( $ch, CURLOPT_HTTP_VERSION , CURL_HTTP_VERSION_1_1 );
        curl_setopt( $ch, CURLOPT_USERAGENT , 'free-api' );
        curl_setopt( $ch, CURLOPT_CONNECTTIMEOUT , 60 );
        curl_setopt( $ch, CURLOPT_TIMEOUT , 60);
        curl_setopt( $ch, CURLOPT_RETURNTRANSFER , true );
        if( $ispost )
        {
            curl_setopt( $ch , CURLOPT_POST , true );
            curl_setopt( $ch , CURLOPT_POSTFIELDS , $params );
            curl_setopt( $ch , CURLOPT_URL , $url );
        }
        else
        {
            if($params){
                curl_setopt( $ch , CURLOPT_URL , $url.'?'.$params );
            }else{
                curl_setopt( $ch , CURLOPT_URL , $url);
            }
        }
        $response = curl_exec( $ch );
        if ($response === FALSE) {
            return false;
        }
        curl_close( $ch );
        return $response;
    }
}