模擬客戶端請求:

<?php
namespace Home\Controller;
use Think\Controller;

class ClientController extends Controller{const TOKEN = 'API';
    //模擬前臺請求服務器api接口
    public function getDataFromServer(){//時間戳
        $timeStamp = time();
        //隨機字符串
        $randomStr = $this -> createNonceStr();
        //生成簽名
        $signature = $this -> arithmetic($timeStamp,$randomStr);
        //url地址
        $url = "http://www.tp3.com/Home/Server/respond/t/{$timeStamp}/r/{$randomStr}/s/{$signature}";
        $result = $this -> httpGet($url);
        dump($result);
    }//curl模擬get請求。
    private function httpGet($url){$curl = curl_init();

        //需要請求的是哪個地址
        curl_setopt($curl,CURLOPT_URL,$url);
        //表示把請求的數據以文件流的方式輸出到變量中
        curl_setopt($curl,CURLOPT_RETURNTRANSFER,1);

        $result = curl_exec($curl);
        curl_close($curl);
        return $result;
    }//隨機生成字符串
    private function createNonceStr($length = 8) {$chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
        $str = "";
        for ($i = 0; $i < $length; $i++) {$str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
        }return "z".$str;
    }/**
     * @param $timeStamp  時間戳
     * @param $randomStr 隨機字符串
     * @return string 返回簽名
     */
    private function arithmetic($timeStamp,$randomStr){$arr['timeStamp'] = $timeStamp;
        $arr['randomStr'] = $randomStr;
        $arr['token'] = self::TOKEN;
        //按照首字母大小寫順序排序
        sort($arr,SORT_STRING);
        //拼接成字符串
        $str = implode($arr);
        //進行加密
        $signature = sha1($str);
        $signature = md5($signature);
        //轉換成大寫
        $signature = strtoupper($signature);
        return $signature;
    }
}

服務端響應請求:

<?php
namespace Home\Controller;
use Think\Controller;

class ServerController extends Controller{const TOKEN = 'API';

    //響應前臺的請求
    public function respond(){//驗證身份
        $timeStamp = $_GET['t'];
        $randomStr = $_GET['r'];
        $signature = $_GET['s']; // $signature 客戶端請求地址中攜帶的簽名,與服務端生成的簽名進行比對
        $str = $this -> arithmetic($timeStamp,$randomStr);//$str 服務端根據客戶端請求過來的數據生成的簽名
        if($str != $signature){echo "-1";
            exit;
        }//模擬數據
        $arr['name'] = 'api';
        $arr['age'] = 15;
        $arr['address'] = 'zz';
        $arr['ip'] = "192.168.0.1";
        echo json_encode($arr);
    }/**
     * @param $timeStamp 時間戳
     * @param $randomStr 隨機字符串
     * @return string 返回簽名
     */
    public function arithmetic($timeStamp,$randomStr){$arr['timeStamp'] = $timeStamp;
        $arr['randomStr'] = $randomStr;
        $arr['token'] = self::TOKEN;
        //按照首字母大小寫順序排序
        sort($arr,SORT_STRING);
        //拼接成字符串
        $str = implode($arr);
        //進行加密
        $signature = sha1($str);
        $signature = md5($signature);
        //轉換成大寫
        $signature = strtoupper($signature);
        return $signature;
    }
}

服務端根據客戶端傳遞過來的時間戳和隨機字符串,來按照約定好的生成簽名的算法生成簽名,并與客戶端傳遞過來的簽名進行對比

如果相同,則返回數據,如果不相同,則不返回數據