微信h5支付首先商户平台要开通h5支付，然后关联公众号，
这里要注意的是h5支付不需要openid，而微信jsapi支付需要openid。
然后拿到：
$appid = ""; //应用
APPID $mch_id = ""; //微信支付商户号
$key = ""; //微信商户 API 密钥
注意配置相关域名和授权目录
商户平台
公众平台
public function web_pay(){
$pr = req::$forms;
///查询到的价格
$sql="select price,id,no from `sm_order` where no='".$pr['oid']."'";
//echo $sql;die;
$order = db::queryone($sql);
//echo '';print_r($order);die;
$money= $order['price']*100; //充值金额 微信支付单位为分
$userip = self::__get_client_ip(); //获得用户设备 IP
//$userip = req::$forms['ip'];
//echo $userip;die;
$appid = ""; //应用 APPID
$mch_id = ""; //微信支付商户号
$key = ""; //微信商户 API 密钥
$out_trade_no = $order['no'];//平台内部订单号
$nonce_str = self::__createNoncestr();//随机字符串
$body = '星座';//内容
$total_fee = $money; //金额
$spbill_create_ip = $userip; //IP
$notify_url = "https://ai.shuaishouhotel.com/v1.0.0/XcxPay/FaceAiPay/notify.php"; //回调地址
$trade_type = 'MWEB';//交易类型 具体看 API 里面有详细介绍
$scene_info ='{"h5_info":{"type":"Wap","wap_url":"https://ai.shuaishouhotel.com","wap_name":"支付"}}';//场景信息 必要参数
$signA ="appid=$appid&attach=$out_trade_no&body=$body&mch_id=$mch_id&nonce_str=$nonce_str¬ify_url=$notify_url&out_trade_no=$out_trade_no&scene_info=$scene_info&spbill_create_ip=$spbill_create_ip&total_fee=$total_fee&trade_type=$trade_type";
$strSignTmp = $signA."&key=$key"; //拼接字符串 注意顺序微信有个测试网址 顺序按照他的来 直接点下面的校正测试 包括下面 XML 是否正确die('222');
$sign = strtoupper(MD5($strSignTmp)); // MD5 后转换成大写
$post_data = "
$appid
$mch_id
$body
$out_trade_no
$total_fee
$spbill_create_ip
$notify_url
$trade_type
$scene_info
$out_trade_no
$nonce_str
$sign
";//拼接成 XML 格式
$url = "https://api.mch.weixin.qq.com/pay/unifiedorder";//微信传参地址
//echo $post_data;die;
$dataxml = self::__postXmlCurl($post_data,$url); //后台 POST 微信传参地址 同时取得微信返回的参数
$objectxml = (array)simplexml_load_string($dataxml, 'SimpleXMLElement', LIBXML_NOCDATA); //将微信返回的 XML 转换成数组
//echo '';print_r($objectxml);die;
if($objectxml['return_code'] == 'SUCCESS'){
//$sql = 'UPDATE sm_order SET sn = "'.$objectxml['sign'].'" WHERE id='.$order['id'];
//db::query($sql);
//$json = '{"Status":200,"Result":{"sn":"'.$objectxml['sign'].'","PrepayId":"'.$objectxml['prepay_id'].'","Package":[],"Url":"'.$objectxml['mweb_url'].'"}}';
}else{
//$json = '{"Status":551,"Result":{"ErrorMsg":"'.$objectxml['return_msg'].'"}}';
}
header('Location: '.$objectxml['mweb_url']);
//echo '{"code":1,"orderId":"1320190412181555064378943"}';
}
private function __createNoncestr( $length = 32 ){
$chars = "abcdefghijklmnopqrstuvwxyz0123456789";
$str ="";
for ( $i = 0; $i < $length; $i++ ) {
$str.= substr($chars, mt_rand(0, strlen($chars)-1), 1);
}
return $str;
}
private function __postXmlCurl($xml,$url,$second = 30){
$ch = curl_init();
//设置超时
curl_setopt($ch, CURLOPT_TIMEOUT, $second);
curl_setopt($ch,CURLOPT_URL, $url);
curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,FALSE);
curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,FALSE);
//设置 header
curl_setopt($ch, CURLOPT_HEADER, FALSE);
//要求结果为字符串且输出到屏幕上
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
//post 提交方式
curl_setopt($ch, CURLOPT_POST, TRUE);
curl_setopt($ch, CURLOPT_POSTFIELDS, $xml);
//运行 curl
$data = curl_exec($ch);
//返回结果
if($data){
curl_close($ch);
return $data;
}else{
$error = curl_errno($ch);
curl_close($ch);
echo "curl 出错，错误码:$error"."
";
}
}
private function __get_client_ip() {
if(getenv('HTTP_CLIENT_IP') && strcasecmp(getenv('HTTP_CLIENT_IP'), 'unknown')) {
$ip = getenv('HTTP_CLIENT_IP');
} elseif(getenv('HTTP_X_FORWARDED_FOR') && strcasecmp(getenv('HTTP_X_FORWARDED_FOR'), 'unknown')) {
$ip = getenv('HTTP_X_FORWARDED_FOR');
} elseif(getenv('REMOTE_ADDR') && strcasecmp(getenv('REMOTE_ADDR'), 'unknown')) {
$ip = getenv('REMOTE_ADDR');
} elseif(isset($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'], 'unknown')) {
$ip = $_SERVER['REMOTE_ADDR'];
}
return preg_match ( '/[\d\.]{7,15}/', $ip, $matches ) ? $matches [0] : '';
}
//对参数排序，生成MD5加密签名
private function getParam($paramArray, $isencode=false,$k)
{
$paramStr = '';
ksort($paramArray);
$i = 0;
foreach ($paramArray as $key => $value)
{
if ($key == 'Signature'){
continue;
}
if ($i == 0){
$paramStr .= '';
}else{
$paramStr .= '&';
}
$paramStr .= $key . '=' . ($isencode?urlencode($value):$value);
++$i;
}
$stringSignTemp=$paramStr."&key=".$k;
$sign=strtoupper(md5($stringSignTemp));
return $sign;
}
private function isWeixin() {
if (strpos($_SERVER['HTTP_USER_AGENT'], 'MicroMessenger') !== false) {
return true;
} else {
return false;
}
}
private function getOpenid($appid, $appsecret)
{
$SERVER_NAME = $_SERVER['SERVER_NAME'];
$REQUEST_URI = $_SERVER['REQUEST_URI'];
$redirect_uri = urlencode('https://' . $SERVER_NAME . $REQUEST_URI);
$code = $_GET['code'];
if (! $code) {
// 网页授权当scope=snsapi_userinfo时才会提示是否授权应用
$autourl = "https://open.weixin.qq.com/connect/oauth2/authorize?appid=$appid&redirect_uri=$redirect_uri&response_type=code&scope=snsapi_userinfo&state=123#wechat_redirect";
header("location:$autourl");
} else {
// 获取openid
$url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=$appid&secret=$appsecret&code=$code&grant_type=authorization_code";
$row = $this->__postXmlCurl($url);
return ($row['openid']);
}
}
private function get_code($callback,$xingzuo_url){
$appid = $this->appid;
$scope = 'snsapi_userinfo';
$state = md5(uniqid(rand(), TRUE));//唯一ID标识符绝对不会重复
$url = 'https://open.weixin.qq.com/connect/oauth2/authorize?appid=' . $appid . '&redirect_uri=' . urlencode($callback) . '&response_type=code&scope=' . $scope . '&state=' . $state . '#wechat_redirect';
echo $url;die;
header("Location:$url");
}
