payks微信支付php类

Payks.class.php

<?php

class Payks
{
    private $mch_id = '';
    private $mch_key = '';

    public function __construct($mch_id, $mch_key) {
        $this->mch_id = $mch_id;
        $this->mch_key = $mch_key;
    }

    //扫码支付
    public function native($data){
        $data['mch_id'] = $this->mch_id;
        $data['sign'] = $this->sign($data);
        return $this->post('https://payks.com/api/native', $data);
    }

    //jsapi支付
    public function jsapi($data){
        $data['mch_id'] = $this->mch_id;
        $data['sign'] = $this->sign($data);
        return $this->post('https://payks.com/api/jsapi', $data);
    }

    //收银台支付
    public function cashier($data){
        $data['mch_id'] = $this->mch_id;
        $data['sign'] = $this->sign($data);
        return 'https://payks.com/api/cashier?' .http_build_query($data);
    }

    //退款
    public function refund($order_id){
        $data['mch_id'] = $this->mch_id;
        $data['out_trade_no'] = $order_id;
        $data['sign'] = $this->sign($data);
        return $this->post('https://payks.com/api/refund', $data);
    }

    public function post($url, $data) {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
        $res = curl_exec($ch);
        curl_close($ch);

        try{
            $json = json_decode($res, true);
            return $json;
        }catch(Exception $e){
            return array('ret' => 1, 'msg' => $e->getMessage());
        }
    }

    public function verify(){
        $post = $_POST;
        if(isset($post['sign']) && isset($post['mch_id'])){
            $sign = $post['sign'];
            unset($post['sign']);

            if($sign === $this->sign($post)){
                return $_POST;
            }else{
                return false;
            }
        }

        return false;
    }

    public function sign($attributes) {
        ksort($attributes);
        $sign = md5(urldecode(http_build_query($attributes)) . '&key=' . $this->mch_key);
        return $sign;
    }
}