PHP微信支付问题（js调用接口）
控制器代码
<?php
namespace Home\Controller;
use Think\Controller;
header('Content-type:text/html;charset=utf-8');
class ShoppingController extends Controller {
//严重说明： 上面的命名空间给引入类要换成自己的路径
private $app_id = ''; //appid
private $mch_id = ''; //商户号
private $makesign = ''; //支付的签名(在商户平台API安全按钮中获取)
private $parameters = NULL;
private $notify = 'http://自己的域名/wxpay.php'; //配置回调地址(给pays中转文件上传到根目录下面)
private $app_secret = ''; //微信官方获取
public $error = 0;
public $orderid = null;
public $openid = '';
//进行微信支付
public function wxPay() {
#获取openid ID
if ($_SESSION['openid'] == null) {
$this->Wxcallback();
}
$reannumb = $this->randomkeys(6); //生成随机数 以后可以当做 订单号
$pays = 1; //获取需要支付的价格
#插入语句书写的地方
$conf = $this->payconfig('Bm' . $reannumb, $pays * 100, '报名费用支付');
if (!$conf || $conf['return_code'] == 'FAIL')
exit("<script>alert('对不起，微信支付接口调用错误!" . $conf['return_msg'] . "');history.go(-1);</script>");
$this->orderid = $conf['prepay_id'];
//生成页面调用参数
$jsApiObj["appId"] = $conf['appid'];
$timeStamp = time();
$jsApiObj["timeStamp"] = "$timeStamp";
$jsApiObj["nonceStr"] = $this->createNoncestr();
$jsApiObj["package"] = "prepay_id=" . $conf['prepay_id'];
$jsApiObj["signType"] = "MD5";
$jsApiObj["paySign"] = $this->MakeSign($jsApiObj);
$this->parameters = json_encode($jsApiObj);
$json = json_encode($jsApiObj);
$this->assign('parameters', $json);
$this->title = "用户订单充值管理";
$this->display();
}
//订单管理
#微信JS支付参数获取#
protected function payconfig($no, $fee, $body) {
$url = "https://api.mch.weixin.qq.com/pay/unifiedorder";
$data['appid'] = $this->app_id;
$data['mch_id'] = $this->mch_id; //商户号
$data['device_info'] = 'WEB';
$data['body'] = $body;
$data['out_trade_no'] = $no; //订单号
$data['total_fee'] = $fee; //金额
$data['spbill_create_ip'] = $_SERVER["REMOTE_ADDR"]; //ip地址
$data['notify_url'] = $this->notify;
$data['trade_type'] = 'JSAPI';
$data['openid'] = $_SESSION['openid']; //获取保存用户的openid
$data['nonce_str'] = $this->createNoncestr();
$data['sign'] = $this->MakeSign($data);
//print_r($data);
$xml = $this->ToXml($data);
$curl = curl_init(); // 启动一个CURL会话
curl_setopt($curl, CURLOPT_URL, $url); // 要访问的地址
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);
//设置header
curl_setopt($curl, CURLOPT_HEADER, FALSE);
//要求结果为字符串且输出到屏幕上
curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE);
curl_setopt($curl, CURLOPT_POST, TRUE); // 发送一个常规的Post请求
curl_setopt($curl, CURLOPT_POSTFIELDS, $xml); // Post提交的数据包
curl_setopt($curl, CURLOPT_TIMEOUT, 30); // 设置超时限制防止死循环
$tmpInfo = curl_exec($curl); // 执行操作
curl_close($curl); // 关闭CURL会话
$arr = $this->FromXml($tmpInfo);
return $arr;
}
/**
* 作用：产生随机字符串，不长于32位
*/
public function createNoncestr($length = 32) {
$chars = "abcdefghijklmnopqrstuvwxyz0123456789";
$str = "";
for ($i = 0; $i < $length; $i++) {
$str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
}
return $str;
}
/**
* 作用：产生随机字符串，不长于32位
*/
public function randomkeys($length) {
$pattern = '1234567890123456789012345678905678901234';
$key = null;
for ($i = 0; $i < $length; $i++) {
$key .= $pattern{mt_rand(0, 30)}; //生成php随机数
}
return $key;
}
/**
* 将xml转为array
* @param string $xml
* @throws WxPayException
*/
public function FromXml($xml) {
//将XML转为array
return json_decode(json_encode(simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA)), true);
}
/**
* 输出xml字符
* @throws WxPayException
* */
public function ToXml($arr) {
$xml = "<xml>";
foreach ($arr as $key => $val) {
if (is_numeric($val)) {
$xml .= "<" . $key . ">" . $val . "</" . $key . ">";
} else {
$xml .= "<" . $key . "><![CDATA[" . $val . "]]></" . $key . ">";
}
}
$xml .= "</xml>";
return $xml;
}
/**
* 生成签名
* @return 签名，本函数不覆盖sign成员变量，如要设置签名需要调用SetSign方法赋值
*/
protected function MakeSign($arr) {
//签名步骤一：按字典序排序参数
ksort($arr);
$string = $this->ToUrlParams($arr);
//签名步骤二：在string后加入KEY
$string = $string . "&key=" . $this->makesign;
//签名步骤三：MD5加密
$string = md5($string);
//签名步骤四：所有字符转为大写
$result = strtoupper($string);
return $result;
}
/**
* 格式化参数格式化成url参数
*/
protected function ToUrlParams($arr) {
$buff = "";
foreach ($arr as $k => $v) {
if ($k != "sign" && $v != "" && !is_array($v)) {
$buff .= $k . "=" . $v . "&";
}
}
$buff = trim($buff, "&");
return $buff;
}
#获取openid ID
public function Wxcallback() {
$direct = $this->get_page_url(); //当前访问URL
//$code =Yii::app()->request->getParam('code'); //获取code码号
$code = $_GET['code']; //获取code码号
if ($code == null) {
header("Location:" . "https://open.weixin.qq.com/connect/oauth2/authorize?appid=" . $this->app_id . "&redirect_uri=" . urlencode($direct) . "&response_type=code&scope=snsapi_base&state=STATE#wechat_redirect");
} else {
$url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=" . $this->app_id . "&secret=" . $this->app_secret . "&code={$code}&grant_type=authorization_code";
$res = $this->request_get($url);
if ($res) {
$data = json_decode($res, true);
//Yii::app()->session["openid"] = $data['openid']; //设置session
$_SESSION['openid'] = $data['openid']; //设置session
//$this->redirect(array('/baoming/index'));
} else {
echo json_encode(array('status' => 0, 'msg' => '获取openid出错', 'v' => 4));
die();
}
}
print_r($_SESSION['openid']);
die();
}
#获取当前访问完整URL#
public function get_page_url($site = false) {
$url = (isset($_SERVER['SERVER_PORT']) && $_SERVER['SERVER_PORT'] == '443') ? 'https://' : 'http://';
$url .= $_SERVER['HTTP_HOST'];
if ($site)
return $this->seldir() . '/'; //访问域名网址
$url .= isset($_SERVER['REQUEST_URI']) ? $_SERVER['REQUEST_URI'] : urlencode($_SERVER['PHP_SELF']) . '?' . urlencode($_SERVER['QUERY_STRING']);
return $url;
}
//返回访问目录
public function seldir() {
$baseUrl = str_replace('\\', '/', dirname($_SERVER['SCRIPT_NAME']));
//保证为空时能返回可以使用的正常值
$baseUrl = empty($baseUrl) ? '/' : '/' . trim($baseUrl, '/');
return 'http://' . $_SERVER['HTTP_HOST'] . $baseUrl;
}
public function callback(){
$xml = file_get_contents("php://input");
$log = json_decode(json_encode(simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA)), true);
$id = $log['out_trade_no']; //获取订单号
exit('SUCCESS');
}
public function request_get($url) {
$curl = curl_init();
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_TIMEOUT, 500);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($curl, CURLOPT_URL, $url);
$res = curl_exec($curl);
curl_close($curl);
return $res;
}
}
根目录下回调文件wxpay.php
<?php
$xml = file_get_contents("php://input");
$url ='http://域名/Home/Shopping/callback';
$ch = curl_init();
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($ch, CURLOPT_BINARYTRANSFER, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); //get the response as a string from curl_exec(), rather than echoing it
curl_setopt($ch, CURLOPT_URL, $url );
curl_setopt($ch, CURLOPT_POST, 1 );
curl_setopt($ch, CURLOPT_POSTFIELDS,$xml);
//取到的$info 即为拿到的script 信息
$info = curl_exec($ch) ;
curl_close($ch); //close the handle
echo $info; //输出
前台代码
或许页面不对，但是功能是这些
<html>
<script type="text/javascript">
//调用微信JS api 支付
//在线充值
function jsApiCall()
{
var b = {$parameters};
WeixinJSBridge.invoke(
'getBrandWCPayRequest',
{
"appId": b.appId,
"nonceStr": b.nonceStr,
"package": b.package,
"paySign": b.paySign,
"signType": b.signType,
"timeStamp": b.timeStamp
},
function (res) {
if (res.err_msg == 'get_brand_wcpay_request:ok') {
} else {
// alert(JSON.stringify(res));
}
}
);
}
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>
<body>
<br/>
<div align="center">
<button style="width:210px; height:50px; border-radius: 15px; border:0px #FE6714 solid; cursor: pointer; color:white; font-size:16px;" type="button" onclick="callpay()" >立即支付</button>
</div>
</body>
</html>
