php post 调用接口生成签名

//获取token

    function getToken()

    {

        //创建签名

        $appid  = '应用id';

        $appkey = '应用密钥';

        $timestamp = time();

        $rand= rand(0,100);

    

        $signature = [$appkey=>$appkey,$rand=>$rand,$timestamp=>$timestamp];

        //字典排序

        usort($signature,'strcmp');

 

        $signature = join('',$signature);

        $signature = hash_hmac("sha1", $signature, $appkey);

 

        //获取token

        $url = '请求地址';

 

        $curl = curl_init();

        curl_setopt($curl, CURLOPT_URL,$url);//设置调用地址

        curl_setopt($curl, CURLOPT_POST, 1);//POST请求

        curl_setopt($curl, CURLOPT_POSTFIELDS, ['appid'=>$appid,'rand'=>$rand,'timestamp'=>$timestamp,'signature'=>$signature]);//携带post请求值

        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);//返回值输出方式

        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);

        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);

 

        $output = curl_exec($curl);

        $output = json_decode($output,true);

 

        curl_close($curl);

 

        return $output;

    }