微信支付如何实现扫商户二维码后输入金额支付，求源代码
看文档。微信有提供SDK。
http://kf.qq.com/faq/120911VrYVrA150906yUZze6.html
https://pay.weixin.qq.com/wiki/doc/api/native.php?chapter=6_3
楼上的谢谢，已经看了，就是想要代码，下边的代码怎么改造？
<?php ini_set('date.timezone','Asia/Shanghai');//error_reporting(E_ERROR);require_once "../lib/WxPay.Api.php";require_once "WxPay.JsApiPay.php";require_once 'log.php';//初始化日志$logHandler= new CLogFileHandler("../logs/".date('Y-m-d').'.log');$log = Log::Init($logHandler, 15);//打印输出数组信息function printf_info($data){ foreach($data as $key=>$value){ echo "<font color='#00ff55;'>$key</font> : $value <br/>"; }}//①、获取用户openid$tools = new JsApiPay();$openId = $tools->GetOpenid();//②、统一下单$input = new WxPayUnifiedOrder();$input->SetBody("test");$input->SetAttach("test");$input->SetOut_trade_no(WxPayConfig::MCHID.date("YmdHis"));$input->SetTotal_fee("1");$input->SetTime_start(date("YmdHis"));$input->SetTime_expire(date("YmdHis", time() + 600));$input->SetGoods_tag("test");$input->SetNotify_url("http://paysdk.weixin.qq.com/example/notify.php");$input->SetTrade_type("JSAPI");$input->SetOpenid($openId);$order = WxPayApi::unifiedOrder($input);echo '<font color="#f00"><b>统一下单支付单信息</b></font><br/>';printf_info($order);$jsApiParameters = $tools->GetJsApiParameters($order);//获取共享收货地址js函数参数$editAddress = $tools->GetEditAddressParameters();//③、在支持成功回调通知中处理成功之后的事宜，见 notify.php/** * 注意： * 1、当你的回调地址不可访问的时候，回调通知会失败，可以通过查询订单来确认支付是否成功 * 2、jsapi支付时需要填入用户openid，WxPay.JsApiPay.php中有获取openid流程 （文档可以参考微信公众平台“网页授权接口”， * 参考http://mp.weixin.qq.com/wiki/17/c0f37d5704f0b64713d5d2c37b468d75.html） */?><html><head> <meta http-equiv="content-type" content="text/html;charset=utf-8"/> <meta name="viewport" content="width=device-width, initial-scale=1"/> <title>微信支付样例-支付</title> <script type="text/javascript"> //调用微信JS api 支付 function jsApiCall() { WeixinJSBridge.invoke( 'getBrandWCPayRequest', <?php echo $jsApiParameters; ?>, function(res){ WeixinJSBridge.log(res.err_msg); alert(res.err_code+res.err_desc+res.err_msg); } ); } function callpay() { if (typeof WeixinJSBridge == "undefined"){ if( document.addEventListener ){ document.addEventListener('WeixinJSBridgeReady', jsApiCall, false); }else if (document.attachEvent){ document.attachEvent('WeixinJSBridgeReady', jsApiCall); document.attachEvent('onWeixinJSBridgeReady', jsApiCall); } }else{ jsApiCall(); } } </script> <script type="text/javascript"> //获取共享地址 function editAddress() { WeixinJSBridge.invoke( 'editAddress', <?php echo $editAddress; ?>, function(res){ var value1 = res.proviceFirstStageName; var value2 = res.addressCitySecondStageName; var value3 = res.addressCountiesThirdStageName; var value4 = res.addressDetailInfo; var tel = res.telNumber; alert(value1 + value2 + value3 + value4 + ":" + tel); } ); } window.onload = function(){ if (typeof WeixinJSBridge == "undefined"){ if( document.addEventListener ){ document.addEventListener('WeixinJSBridgeReady', editAddress, false); }else if (document.attachEvent){ document.attachEvent('WeixinJSBridgeReady', editAddress); document.attachEvent('onWeixinJSBridgeReady', editAddress); } }else{ editAddress(); } }; </script></head><body> <br/> <font color="#9ACD32"><b>该笔订单支付金额为<span style="color:#f00;font-size:50px">1分</span>钱</b></font><br/><br/> <div align="center"> <button style="width:210px; height:50px; border-radius: 15px;background-color:#FE6714; border:0px #FE6714 solid; cursor: pointer; color:white; font-size:16px;" type="button" onclick="callpay()" >立即支付</button> </div></body></html>解决办法：http://blog.csdn.net/wyx100/article/details/49813299
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