给系统（只适合版本6.0）增加微信H5支付，系统原本是没有H5支付，只有微信扫码支付和微信公众号支付
1、先在met_pay_config表中，增加H5支付参数，9=H5支付
2、在系统中，浏览器在手机状态下增加微信H5支付
路径：\app\system\pay\web\include\class interface_pay.class.php
public function get_pay_list() {
global $_M;
$return = array();
$query = "SELECT * FROM {$_M['table'][pay_config]} WHERE name='payment_type' and lang='{$_M['lang']}'";
$payment_type = DB::get_one($query);
$list = explode('|', $payment_type['value']);
$url = "{$_M['url']['site']}pay/app.php?paytype=";
if($this->is_weixin()){//微信端
if(strstr($payment_type['value'], '6')){
$openId = $this->weixinopenId();
$return['weixin_h5']['have'] = 1;
$return['weixin_h5']['url'] = $url.'6';
$return['weixin_h5']['check_url'] = "{$_M['url']['site']}pay/orderquery.php?paytype=1&out_trade_no=";
}
}else if($this->is_mobile()){//是移动端，就出现下面这些支付方式1
if(strstr($payment_type['value'], '3')){
$return['alipay']['have'] = 1;
$return['alipay']['url'] = $url.'3';
}
if(strstr($payment_type['value'], '5')){
$return['paypal']['have'] = 1;
$return['paypal']['url'] = $url.'5';
}
if(strstr($payment_type['value'], '4')){
$return['upay']['have'] = 1;
$return['upay']['url'] = $url.'4';
}
// if(strstr($payment_type['value'], '6')){//微信公众号支付
// //$openId = $this->weixinopenId();
// $return['weixin_h5']['have'] = 1;
// $return['weixin_h5']['url'] = $url.'6';
// $return['weixin_h5']['check_url'] = "{$_M['url']['site']}pay/orderquery.php?paytype=1&out_trade_no=";
// }
if(strstr($payment_type['value'], '9')){//微信H5支付
//$out_trade_no=date('YmdHis').rand(1, 100000);
$return['weixin_jspay']['have'] = 1;
$return['weixin_jspay']['url'] = $url.'9';
//$return['weixin_jspay']['check_url'] = "{$_M['url']['site']}pay/orderquery.php?paytype=9&out_trade_no=";
}
}else{//其它端，比如PC
if(strstr($payment_type['value'], '1')){
$return['weixin']['have'] = 1;
$return['weixin']['url'] = $url.'1';
$return['weixin']['check_url'] = "{$_M['url']['site']}pay/orderquery.php?paytype=1&out_trade_no=";
}
if(strstr($payment_type['value'], '2')){
$return['tenpay']['have'] = 1;
$return['tenpay']['url'] = $url.'2';
}
if(strstr($payment_type['value'], '3')){
$return['alipay']['have'] = 1;
$return['alipay']['url'] = $url.'3';
}
if(strstr($payment_type['value'], '5')){
$return['paypal']['have'] = 1;
$return['paypal']['url'] = $url.'5';
}
if(strstr($payment_type['value'], '4')){
$return['upay']['have'] = 1;
$return['upay']['url'] = $url.'4';
}
/*if(strstr($payment_type['value'], '7')){
$return['jd']['have'] = 1;
$return['jd']['url'] = $url.'7';
}*/
}
return $return;
}3、在前端模块中增加H5支付链接
\app\app\shop\web\templates\met shop_pay_order.php
<!--
EOT;
}
if($pay_list['weixin_h5']){
echo <<<EOT
-->
<li class="text-xs-center pay-order-weixin">
<a class="block cover pay-online payment-weixin-h5" href="javascript:void(0)" data-url="{$pay_list['weixin_h5']['url']}" data-check_url="{$pay_list['weixin_h5']['check_url']}"><img src="{$_M[url][shop_ui]}static/img/weixinpay.png" class='img-fluid inline-block'/></a>
</li>
<!-- End Modal -->
<!-- Modal -->
<div class="modal fade modal-primary" id="payment-weixin-h5-modal" aria-hidden="true" role="dialog" tabindex="-1">
<div class="modal-dialog modal-center modal-sm">
<div class="h-100 vertical-align text-xs-center order-loader"><div class="loader vertical-align-middle loader-default"></div></div>
</div>
</div>
<!-- End Modal -->
<!--
EOT;
}
if($pay_list['weixin_jspay']){//微信H5支付
echo <<<EOT
-->
<li class="text-xs-center pay-order-weixin">
<a class="block cover pay-online payment-weixin-jspay" href="javascript:void(0)" data-url="{$pay_list['weixin_jspay']['url']}" data-check_url="{$pay_list['weixin_jspay']['check_url']}{$order[orderid]}"><img src="{$_M[url][shop_ui]}static/img/weixinpay.png" class='img-fluid inline-block'/></a>
</li>
<!-- End Modal -->
<!-- Modal -->
<div class="modal fade modal-primary" id="payment-weixin-h5-modal" aria-hidden="true" role="dialog" tabindex="-1">
<div class="modal-dialog modal-center modal-sm">
<div class="h-100 vertical-align text-xs-center order-loader"><div class="loader vertical-align-middle loader-default"></div></div>
</div>
</div>
<!-- End Modal -->
<!--
EOT;
}
if($pay_list['upay']){
echo <<<EOT
-->4、支付的时候转到H5支付
\app\system\pay\web app.class.php
5、在支付类中增加H5类
\app\system\pay\web wxpay.class.php
/**
* 微信H5支付
* @param String(128) body 商品描述（商品或支付单简要描述）
* @param String(127) attach 附加数据（在查询API和支付通知中原样返回，该字段主要用于商户携带订单的自定义数据）
* @param String(32) out_trade_no 商户订单号（商户支付的订单号由商户自定义生成，长度不大于32位、可包含字母）
* @param Int total_fee 总金额（订单总金额，原始单位为分，只能为整数。可后台处理为“元”为单位）
* @param String(32) goods_tag 商品标记（商品标记，代金券或立减优惠功能的参数）
* @param String(32) product_id 商品ID（trade_type=NATIVE/MWEB，此参数必传。此id为二维码中包含的商品ID，商户自行定义）
* @param String(32) SetScene_info 场景信息（trade_type=MWEB，此参数必传。该字段用于上报支付的场景信息,针对H5支付有以下三种场景）
* 1，IOS移动应用
* 2，安卓移动应用
* 3,WAP网站应用
{"h5_info": //h5支付固定传"h5_info"
{"type": "", //场景类型
"wap_url": "",//WAP网站URL地址
"wap_name": "" //WAP 网站名
}
}
*/
public static function webH5($date) {
global $_M;
$notify_url = is_strinclude($_M['url']['pay_notify'], 'localhost') ? '' : $_M['url']['pay_notify'];
//$redirect_url = $_M['url']['order_query']."out_trade_no={$date['out_trade_no']}&paytype=9&return=1";
$redirect_url = $date['return_url']."out_trade_no={$date['out_trade_no']}&paytype=9&return=1";
//var_dump($date['return_url']);die;
$notify = new NativePay();
$input = new WxPayUnifiedOrder();
$info = array();
$info['type'] = "Wap";
$info['wap_url'] = $_M['url']['site'];
$info['wap_name'] = $date['subject'];
//$info['wap_name'] = "adsadas";
$infoarr = array();
$infoarr['h5_info'] = $info;
$scene_info = jsonencode($infoarr);
#$scene_info = '{"h5_info":{"type":"Wap","wap_url":"http://met6.com/","wap_name":"adsadas"}}';//测试
$cip = $_SERVER['REMOTE_ADDR'];
if(!$cip){
$cip = getenv('REMOTE_ADDR');
}
//$input->GetAppid();
//var_dump($values['appid']);die;
$input->SetBody($date['body']);
//$input->SetAttach($date['attach']);
$input->SetOut_trade_no($date['out_trade_no']);
$input->SetTotal_fee($date['total_fee']*100);
$input->SetTime_start(date("YmdHis"));
$input->SetTime_expire(date("YmdHis", time() + 600));
$input->SetGoods_tag($date['goods_tag']);
$input->SetNotify_url($notify_url);
$input->SetTrade_type("MWEB"); //JSAPI 公众号支付 | NATIVE 扫码支付 | APP APP支付
// $input->SetProduct_id($date['product_id']);
// $input->SetScene_info($scene_info);
//$result = $notify->GetPayUrl($input);
$result = WxPayApi::unifiedOrder($input);
$url = $result["mweb_url"];
//$url = $url."&redirect_url=".urlencode($redirect_url);
$url = $url."&redirect_url=".$redirect_url;
//var_dump($url);die;
header("Location:$url");
}微信文件放到这个文件夹：\app\system\pay\web\wxpay\