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微信支付
一念永恒的博客
Original
809 people have browsed it
前期准备：
1.当然了，还是要有一个微信认证服务号，并且开通了微信支付；
2.在微信商户后台配置好支付授权目录，同时准备好支付的Api证书（支付用不到，退款的时候使用）
3.调用接口支付的话，必须要先知道该用户的openid，所以要先知道怎么获取用户的openid

（一）
/**
 * 微信支付请求接口(POST)
 * @param string $openid 	openid
 * @param string $body 		商品简单描述
 * @param string $order_sn  订单编号
 * @param string $total_fee 金额
 * @return  json的数据
 */
public function wxpay($openid,$total_fee,$body,$order_sn){
	$config = $this->config;
	
	//统一下单参数构造
	$unifiedorder = array(
		'appid'			=> $config['appid'],
		'mch_id'		=> $config['mch_id'],
		'nonce_str'		=> self::getNonceStr(),
		'body'			=> $body,
		'out_trade_no'	=> $order_sn,
		'total_fee'		=> $total_fee * 100,
		'spbill_create_ip'	=> self::getip(),
		'notify_url'	=> 'http://'.$_SERVER['HTTP_HOST'].'/notify.php',
		'trade_type'	=> 'JSAPI',
		'openid'		=> $openid
	);
	$unifiedorder['sign'] = self::makeSign($unifiedorder);
	
	//return $unifiedorder;
	
	//请求数据,统一下单
	$xmldata = self::array2xml($unifiedorder);
	$url = 'https://api.mch.weixin.qq.com/pay/unifiedorder';
	$res = self::curl_post_ssl($url, $xmldata);
	if(!$res){
		return array('status'=>0, 'msg'=>"Can't connect the server" );
	}
	// 这句file_put_contents是用来查看服务器返回的结果 测试完可以删除了
	//file_put_contents('./log.txt',$res,FILE_APPEND);
	
	$content = self::xml2array($res);
	if(strval($content['result_code']) == 'FAIL'){
		return array('status'=>0, 'msg'=>strval($content['err_code']).':'.strval($content['err_code_des']));
	}
	if(strval($content['return_code']) == 'FAIL'){
		return array('status'=>0, 'msg'=>strval($content['return_msg']));
	}
	
	$time = time();
	settype($time, "string");  		//jsapi支付界面,时间戳必须为字符串格式
	$resdata = array(
		'appId'      	=> strval($content['appid']),
		'nonceStr'      => strval($content['nonce_str']),
		'package'       => 'prepay_id='.strval($content['prepay_id']),
		'signType'		=> 'MD5',
		'timeStamp'		=> $time
	);
	$resdata['paySign'] = self::makeSign($resdata);
	
	return json_encode($resdata);
}
 
/**
 * 微信退款(POST)
 * @param string(28) $transaction_id 	在微信支付的时候,微信服务器生成的订单流水号,在支付通知中有返回
 * @param string $out_refund_no 		商品简单描述
 * @param string $total_fee 			微信支付的时候支付的总金额(单位:分)
 * @param string $refund_fee 			此次要退款金额(单位:分)
 * @return string						xml格式的数据
 */
public function refund($transaction_id,$out_refund_no,$total_fee,$refund_fee){
	$config = $this->config;
	
	//退款参数
	$refundorder = array(
		'appid'			=> $config['appid'],
		'mch_id'		=> $config['mch_id'],
		'nonce_str'		=> self::getNonceStr(),
		'transaction_id'=> $transaction_id,
		'out_refund_no'	=> $out_refund_no,
		'total_fee'		=> $total_fee * 100,
		'refund_fee'	=> $refund_fee * 100
	);
	$refundorder['sign'] = self::makeSign($refundorder);
	
	//请求数据,进行退款
	$xmldata = self::array2xml($refundorder);
	$url = 'https://api.mch.weixin.qq.com/secapi/pay/refund';
	$res = self::curl_post_ssl($url, $xmldata);
	if(!$res){
		return array('status'=>0, 'msg'=>"Can't connect the server" );
	}
	// 这句file_put_contents是用来查看服务器返回的结果 测试完可以删除了
	//file_put_contents('./log3.txt',$res,FILE_APPEND);
	
	$content = self::xml2array($res);
	if(strval($content['result_code']) == 'FAIL'){
		return array('status'=>0, 'msg'=>strval($content['err_code']).':'.strval($content['err_code_des']));
	}
	if(strval($content['return_code']) == 'FAIL'){
		return array('status'=>0, 'msg'=>strval($content['return_msg']));
	}
	
	return $content;
}


（二）
<?php 
 
require_once "wxpay.class.php";
 
$config = array(
	'wxappid'		=> 'wx123456789876',
	'mch_id'	 	=> '123456789',
	'pay_apikey' 	=> '123456789876123456789876123456789876'
);
 
$wxpay = new WxPay($config);
$result = $wxpay->paytest();
 
?>
 
<html>
<head>
    <meta http-equiv="content-type" content="text/html;charset=utf-8"/>
    <meta name="viewport" content="width=device-width, initial-scale=1"/> 
    <title>微信测试支付</title>
    <script type="text/javascript">
	//调用微信JS api 支付
	function jsApiCall()
	{
		WeixinJSBridge.invoke(
			'getBrandWCPayRequest',<?php echo $result; ?>,
			function(res){
				WeixinJSBridge.log(res.err_msg);
				//alert(res);
			    if(res.err_msg == "get_brand_wcpay_request:ok"){  
				    alert("支付成功!");
			    }else if(res.err_msg == "get_brand_wcpay_request:cancel"){  
				    alert("用户取消支付!");
			    }else{  
				    alert("支付失败!");  
			    }  
			}
		);
	}
 
	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>
	
</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/>
	<font color="#9ACD32"><b><span style="color:#f00;font-size:50px;margin-left:40%;">1分</span>钱也是爱</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()" >果断买买买^_^</button>
	</div>
</body>
</html>




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