使用ThinkPHP5写的微信支付，$res数组下是要使用到的数据
//微信支付
public function Pay()
{
$res = request()->param();
//注意：：：：117行需要填写商户密钥wx_key
//总金额
$res['total_fee'] = intval($res['total_fee'] * 100);
//appid
$appid = $res['appid'];
$body = '内容体';
$mch_id = '商户号';
//随机字符串
$nonce_str = $this->nonce_str();
$notify_url = '回调地址，一个url';
//用户openid
$openid = $res['openid'];
//商户订单号
$out_trade_no = $res['orderid'];
$spbill_create_ip = '终端ip 随意 无强制要求';
//总价
$total_fee = $res['total_fee'];
$trade_type = 'JSAPI';
$post['appid'] = $appid;
$post['body'] = $body;
$post['mch_id'] = $mch_id;
$post['nonce_str'] = $nonce_str;
$post['notify_url'] = $notify_url;
$post['openid'] = $openid;
$post['out_trade_no'] = $out_trade_no;
$post['spbill_create_ip'] = $spbill_create_ip;
$post['total_fee'] = $total_fee;
$post['trade_type'] = $trade_type;
$sign = $this->sign($post);
$post_xml = '<xml>
<appid>' . $appid . '</appid>
<body>' . $body . '</body>
<mch_id>' . $mch_id . '</mch_id>
<nonce_str>' . $nonce_str . '</nonce_str>
<notify_url>' . $notify_url . '</notify_url>
<openid>' . $openid . '</openid>
<out_trade_no>' . $out_trade_no . '</out_trade_no>
<spbill_create_ip>' . $spbill_create_ip . '</spbill_create_ip>
<total_fee>' . $total_fee . '</total_fee>
<trade_type>' . $trade_type . '</trade_type>
<sign>' . $sign . '</sign>
</xml> ';
//统一接口prepay_id
$url = 'https://api.mch.weixin.qq.com/pay/unifiedorder';
$xml = $this->http_request($url, $post_xml);
$array = $this->xml($xml);//全要大写
if ($array['RETURN_CODE'] == 'SUCCESS' && $array['RESULT_CODE'] == 'SUCCESS') {
$time = time();
$tmp = [];//临时数组用于签名
$tmp['appId'] = $appid;
$tmp['nonceStr'] = $nonce_str;
$tmp['package'] = 'prepay_id=' . $array['PREPAY_ID'];
$tmp['signType'] = 'MD5';
$tmp['timeStamp'] = "$time";
$data['state'] = 1;
$data['timeStamp'] = "$time";//时间戳
$data['nonceStr'] = $nonce_str;//随机字符串
$data['signType'] = 'MD5';//签名算法，暂支持 MD5
$data['package'] = 'prepay_id=' . $array['PREPAY_ID'];
//统一下单接口返回的 prepay_id 参数值，提交格式如：prepay_id=*
$data['paySign'] = $this->sign($tmp);//签名,具体签名方案参见微信公众号支付帮助文档;
$data['out_trade_no'] = $out_trade_no;
} else {
$data['state'] = 0;
$data['text'] = "错误";
$data['RETURN_CODE'] = $array['RETURN_CODE'];
$data['RETURN_MSG'] = $array['RETURN_MSG'];
}
return json($data);
}
//随机32位字符串
public function nonce_str()
{
$result = '';
$str = 'QWERTYUIOPASDFGHJKLZXVBNMqwertyuioplkjhgfdsamnbvcxz';
for ($i = 0; $i < 32; $i++) {
$result .= $str[rand(0, 48)];
}
return $result;
}
//生成订单号
private function order_number($openid)
{
//date('Ymd',time()).time().rand(10,99);//18位
return md5($openid . time() . rand(10, 99));//32位
}
//签名 $data要先排好顺序
private function sign($data)
{
$stringA = '';
foreach ($data as $key => $value) {
if (!$value) continue;
if ($stringA) $stringA .= '&' . $key . "=" . $value;
else $stringA = $key . "=" . $value;
}
$wx_key = '商户密钥wx_key';
$stringSignTemp = $stringA . '&key=' . $wx_key;
return strtoupper(md5($stringSignTemp));
}
//curl请求啊
function http_request($url, $data = null, $headers = array())
{
$curl = curl_init();
if (count($headers) >= 1) {
curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
}
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);
if (!empty($data)) {
curl_setopt($curl, CURLOPT_POST, 1);
curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
}
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
$output = curl_exec($curl);
curl_close($curl);
return $output;
}
//获取xml
private function xml($xml)
{
$p = xml_parser_create();
xml_parse_into_struct($p, $xml, $vals, $index);
xml_parser_free($p);
$data = [];
foreach ($index as $key => $value) {
if ($key == 'xml' || $key == 'XML') continue;
$tag = $vals[$value[0]]['tag'];
$value = $vals[$value[0]]['value'];
$data[$tag] = $value;
}
return $data;
}