/**
* 发起支付
*/
public function pay($user_id, $order_id)
{
// 查看用户信息
$user_info = $this -> user_info($user_id);
// 查看订单信息
$order_info = $this -> order_info($order_id);
// 基本信息
$money = $order_info['order_amount'] * 100;
$openid = $user_info['mp_unionid']; // 用户openid
$order_code = $order_id; // 订单号
$nonce_str = self::getNonceStr(); // 随机字符串
$notify_url = "https://new.zhyin.net/index.php/mobile/pay/zhifu";
// 发送数据
$post_data = [
'appid' => "",
'mch_id' => "",
'nonce_str' => $nonce_str,
'body' => '智慧印',
'out_trade_no' => $order_code,
'total_fee' => $money,
'spbill_create_ip' => $_SERVER['REMOTE_ADDR'],
'trade_type' => 'JSAPI',
'openid' => $openid,
'notify_url' => $notify_url
];
// 生成签名
$post_data['sign'] = $this->MakeSign($post_data, "");
// 组合XML数据
$xmlData = $this->MakeXml($post_data);
// 发送请求
$this->we_chat_url = 'https://api.mch.weixin.qq.com/pay/unifiedorder';
$result = $this->curl_post($this->we_chat_url,$xmlData,true);
// 解析xml数据
$payment = $this->FromXml($result);
// 是否请求成功
if($payment['return_code'] != 'SUCCESS'){
$this->jsonError($payment['return_msg']);
}
if ($payment['result_code'] == 'SUCCESS'){
$payment['timestamp'] = time();
// 创建统一订单信息
$sign_data = [
'appId'=>$payment['appid'],
'nonceStr'=>$payment['nonce_str'],
'package'=>'prepay_id=' . $payment['prepay_id'],
'signType'=>'MD5',
'timeStamp'=>'' . $payment['timestamp'] . '',
];
$sign_data['paySign'] = $this->MakeSign($sign_data , "");
return json_encode($sign_data);
} else {
return ['支付失败'];
}
}
/**
* 产生随机字符串，不长于32位
* @param int $length
* @return string
*/
protected static function getNonceStr($length = 32)
{
$chars = "abcdefghijklmnopqrstuvwxyz0123456789";
$str ="";
for ( $i = 0; $i < $length; $i++ ) {
$str .= substr($chars, mt_rand(0, strlen($chars)-1), 1);
}
return $str;
}
/**
* 生成签名 签名，本函数不覆盖sign成员变量，如要设置签名需要调用SetSign方法赋值
* @param $sign
* @param string $keys
* @return string
*/
protected function MakeSign($sign, $keys = '')
{
ksort($sign); // 数组排序
$str = '';
foreach($sign as $key=>$val){
if($val != ''){
$str .= $key . "=" . $val . "&";
}
}
$str .= "key=" . $keys;
$sign = strtoupper(md5($str));
return $sign;
}
/**
* 生成XML数据
* @param $data
* @return string
*/
protected function MakeXml($data)
{
$xmlData = "";
foreach($data as $key=>$val){
$xmlData.="<".$key.">".$val."";
}
$xmlData.= " ";
return $xmlData;
}
/**
* POST请求数据
* @param $url
* @param $xmlData
* @param bool $useCert
* @return mixed
*/
public function curl_post($url, $xmlData, $useCert = false)
{
$header[] = "Content-type: text/xml";
// POST发送数据
$ch = curl_init(); // 初始化CURL会话
curl_setopt($ch, CURLOPT_TIMEOUT, 30);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
if($useCert == true){
//设置证书
//使用证书：cert 与 key 分别属于两个.pem文件
//证书文件请放入服务器的非web目录下
$sslCertPath = getcwd() . "/wx_cert/apiclient_cert.pem";
$sslKeyPath = getcwd() . "/wx_cert/apiclient_key.pem";
curl_setopt($ch,CURLOPT_SSLCERTTYPE,'PEM');
curl_setopt($ch,CURLOPT_SSLCERT, $sslCertPath);
curl_setopt($ch,CURLOPT_SSLKEYTYPE,'PEM');
curl_setopt($ch,CURLOPT_SSLKEY, $sslKeyPath);
}
curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
curl_setopt($ch, CURLOPT_POSTFIELDS, $xmlData);
$result = curl_exec($ch); // 获取结果
curl_close($ch);// 关闭会话
return $result;
}
/**
* 将xml转为array
* @param $xml
* @return mixed
*/
protected function FromXml($xml)
{
if(!$xml){
return json_encode(0,'','XML解析错误！');
}
libxml_disable_entity_loader(true);
$values = json_decode(json_encode(simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA)), true);
return $values;
}
回调地址
public function zhifu()
{
$postXml = file_get_contents('php://input');
libxml_disable_entity_loader(true);
$data = json_decode(json_encode(simplexml_load_string($postXml, 'SimpleXMLElement', LIBXML_NOCDATA)), true);
$order_id = $data['out_trade_no']; // 订单单号
// 查看有没有这个订单
$order_info_where['order_id'] = $order_id;
$order_info_where['order_state'] = 10;
$order_info = Db::name('order') -> where($order_info_where) -> find();
// 有这个订单则执行操作
if ($order_info)
{
$update['order_state'] = '20';
$update['payment_time'] = time();
if (Db::name('order') -> where($order_info_where) -> update($update))
{
// 减每个商品的库存
$order_common = Db::name('order_goods') -> where('order_id', $order_id) -> select();
foreach($order_common as $v)
{
$goods = Db::name('goods') -> where('goods_id', $v['goods_id']) -> field('goods_storage, goods_salenum, goods_id') -> find();
$update_goods['goods_storage'] = $goods['goods_storage'] - $v['goods_num'];
$update_goods['goods_salenum'] = $goods['goods_salenum'] + $v['goods_num'];
Db::name('goods') -> where('goods_id', $v['goods_id']) -> update($update_goods);
}
$str='