本文實例講述了php版微信js-sdk支付接口類用法。分享給大家供大家參考，具體如下：
這個支付類是根據官方的文檔修改而來！主要實現生成JS API 、Native的package簽名包和Native響應的XML格式數據。注釋都標上了各方法的用意。由於package包簽名，略復雜，這個要自己多花時間去對應去看和log出文件來一一對比！當然只要你用上教程的類，設置好對應的參數就可以正確的生成package參數等
<?php
if (isset($argc) && $argc >= 1 && $argv[0] == __FILE__) {
//初始化pay的必要信息
$pay = new WechatPay(array(
WechatPay::APPID => 'wx99dabzpiuq83985b8',
WechatPay::APPSERCER => 'ac12e7e4abaer63hkoa0cc36a9663fa',
WechatPay::PARTNERKEY => 'bae4sfa3562rsfaq23s2045',
WechatPay::PARTNERID => '1268969802',
WechatPay::PAYSIGNKEY => '9Fqsxb3PK4IVOCEc4yCquy5zecS9LeeMjF2Nn4B4YKoOxPwaQdFwMezKT8oNlBYaWcuT',
WechatPay::SIGNTYPE => 'sha1',
));
//設置package 必要的參數 jsapi native都通用
$pay->setParams(WechatPay::BANK_TYPE, "WX");
$pay->setParams(WechatPay::BODY, "test");
$pay->setParams(WechatPay::PARTNER, $pay->partnerid);
$pay->setParams(WechatPay::OUT_TRADE_NO, commonUtil::createNoncestr());
$pay->setParams(WechatPay::TOTAL_FEE, "1");
$pay->setParams(WechatPay::FEE_TYPE, "1");
$pay->setParams(WechatPay::TIMESTAMP, time());
$pay->setParams(WechatPay::NOTIFY_URL, "http://www.demo.com/notify");
$pay->setParams(WechatPay::SPBILL_CREATE_IP, "127.0.0.1");
$pay->setParams(WechatPay::INPUT_CHARSET, "UTF-8");
//JSAPI的簽名json
print_r($pay->createJsApiPackage());
//生成native XML
print_r($pay->createNativePackage());
//生成native URL
print_r($pay->createNativeUrl("9701"));
}
JS API生成的package簽名包參數：
{
"appId":"wx9998ff5f4dede5b7",
"package":"bank_type=WX&body=test&fee_type=1&input_charset=UTF-8¬ify_url=http%3A%2F%2Fwww.demo.com%2Fnotify&out_trade_no=Vf5qsSwtu0hc2loH&partner=wx9998ff5f4dede5b7&spbill_create_ip=127.0.0.1×tamp=1409295711&total_fee=1&sign=FEE0167BD0D89A88BF6850590EA889B6",
"timeStamp":1409295711,
"nonceStr":"Vf5qsSwtu0hc2loH",
"paySign":"f816264c750923863c370a1739640244b0c2d39c",
"signType":"sha1"
}
Native 響應的XML格式：
<xml>
<AppId><![CDATA[wx9998ff5f4dede5b7]]></AppId>
<Package>
<![CDATA[bank_type=WX&body=test&fee_type=1&input_charset=UTF-8¬ify_url=http%3A%2F%2Fwww.demo.com%2Fnotify&out_trade_no=GDl3what4sALDEAd&partner=wx9998ff5f4dede5b7&spbill_create_ip=127.0.0.1×tamp=1409296124&total_fee=1&sign=BF949B85570644B939B369FD44B0C4A9]]>
</Package>
<TimeStamp>1409296124</TimeStamp>
<NonceStr><![CDATA[GDl3what4sALDEAd]]></NonceStr>
<RetCode>0</RetCode>
<RetErrMsg><![CDATA[ok]]></RetErrMsg>
<AppSignature><![CDATA[ca4a2467b817a62c38a9801fcf451f51692027bf]]></AppSignature>
<SignMethod><![CDATA[sha1]]></SignMethod>
</xml>
Native的URL鏈接：
weixin://wxpay/bizpayurl?appid=wx9998ff5f4dede5b7&noncestr=VY7cVA6mtVrc1BVq&productid=9701&sign=43508b65b50e1d7e1089be66d55a709469155d73×tamp=1409296323
無論哪一種方式，我們都要通過setParams來設置必要初始化參數和商品價格和狀態等！
WechatPay class:
<?php
class WechatPay {
const
BANK_TYPE = 'bank_type',
BODY = 'body',
PARTNER = 'partner',
OUT_TRADE_NO = 'out_trade_no',
TIMESTAMP = 'timestamp',
TOTAL_FEE = 'total_fee',
FEE_TYPE = 'fee_type',
NOTIFY_URL = 'notify_url',
SPBILL_CREATE_IP = 'spbill_create_ip',
INPUT_CHARSET = 'input_charset',
APPID = 'appid',
APPSERCER = 'appsercer',
PAYSIGNKEY = 'appkey',
PARTNERID = 'partnerid',
PARTNERKEY = 'partnerkey',
SIGNTYPE = 'signtype';
public
$params = array(), $partnerid = '';
static protected
$_instance;
protected
$_appid, $_appkey, $_signtype, $_partnerkey, $_appsercer;
static public function getInstance(array $options = array()) {
if (empty(self::$_instance)) {
self::$_instance = new self ($options);
}
return self::$_instance;
}
public function __construct(array $options = array()){
$this->_appid = $options[self::APPID];
$this->_appkey = $options[self::PAYSIGNKEY];
$this->_signtype = $options[self::SIGNTYPE];
$this->_partnerkey = $options[self::PARTNERKEY];
$this->_appsercer = $options[self::APPSERCER];
$this->partnerid = $options[self::APPID];
}
public function setParams($param, $paramValue) {
$this->params[CommonUtil::trimString($param)] = CommonUtil::trimString($paramValue);
}
public function getParams($param) {
return $this->params[$param];
}
protected function createNoncestr( $length = 16 ) {
$chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
$str ="";
for ( $i = 0; $i < $length; $i++ ) {
$str.= substr($chars, mt_rand(0, strlen($chars)-1), 1);
}
return $str;
}
public function checkParams(){
//必要的9個參與簽名的參數
if($this->params[self::BANK_TYPE] == null || $this->params[self::BODY] == null || $this->params[self::PARTNER] == null ||
$this->params[self::OUT_TRADE_NO] == null || $this->params[self::TOTAL_FEE] == null || $this->params[self::FEE_TYPE] == null ||
$this->params[self::NOTIFY_URL] == null || $this->params[self::SPBILL_CREATE_IP] == null || $this->params[self::INPUT_CHARSET] == null
) {
return false;
}
return true;
}
/*
* 生成package包
* @params 初始化類時用setParams方法定義必要的9個參數
* 排序後格式化url query形式 再md5SignUtil類簽名，再給合URL
*/
protected function getPackageSign(){
try {
if (null == $this->_partnerkey || "" == $this->_partnerkey ) {
throw new Exception("密鑰不能為空！" . "<br>");
}
$commonUtil = new CommonUtil();
ksort($this->params);
$unSignParaString = $commonUtil->formatUrlQuery($this->params, false);
$paraString = $commonUtil->formatUrlQuery($this->params, true);
$md5SignUtil = new MD5SignUtil();
return $paraString . "&sign=" . $md5SignUtil->sign($unSignParaString,commonUtil::trimString($this->_partnerkey));
} catch (Exception $e) {
echo ($e->getMessage());
}
}
/*
* 生成簽名方法
* @params appid appkey package timestamp noncestr 等參數而native事例代碼中加上retcode reterrmsg兩個參數
*/
public function getPaySign($signObj){
foreach ($signObj as $k => $v){
$signParams[strtolower($k)] = $v;
}
try {
if ($this->_appkey == "") {
throw new Exception("APPKEY為空！" . "<br>");
}
$signParams["appkey"] = $this->_appkey;
ksort($signParams, SORT_STRING);
$commonUtil = new CommonUtil();
$signString = $commonUtil->formatPayUrlQuery($signParams, false);
return sha1($signString);
} catch (Exception $e) {
echo ($e->getMessage());
}
}
//JS API 簽名 其中nonceStr是作為訂單號 灌穿整個支付流程
public function createJsApiPackage(){
try {
if($this->checkParams() == false) {
throw new Exception("生成package參數缺失！" . "<br>");
}
$payObj["appId"] = $this->_appid;
$payObj["package"] = $this->getPackageSign();
$payObj["timeStamp"] = $this->getParams(self::TIMESTAMP);
$payObj["nonceStr"] = $this->getParams(self::OUT_TRADE_NO);
$payObj["paySign"] = $this->getPaySign($payObj);
$payObj["signType"] = $this->_signtype;
return json_encode($payObj);
} catch (Exception $e) {
die($e->getMessage());
}
}
/*
* 構建發貨狀態數組 主要三個參數openid transid orderid
*/
public function createDeliverPost(Array $params) {
$deliver = array();
$deliver['appid'] = $this->_appid;
$deliver['openid'] = $params['openid'];
$deliver['transid'] = $params['transid'];
$deliver['out_trade_no'] = $params['out_trade_no'];
$deliver['deliver_timestamp'] = current_time('timestamp');
$deliver['deliver_status'] = 1;
$deliver['deliver_msg'] = 'OK';
$deliver['app_signature'] = $this->getPaySign($deliver);
$deliver['sign_method'] = 'sha1';
return $deliver;
}
/*
* 生成掃描或者點擊原生URL後，響應的XML格式
* @params $retcode $reterrmsg 定義該商品的狀態
*/
public function createNativePackage($retcode = 0, $reterrmsg = "ok") {
try {
if ($this->checkParams() == false && $retcode == 0) { //如果是正常的返回， 檢查財付通的參數
throw new Exception("生成package參數缺失！" . "<br>");
}
$nativeObj["AppId"] = $this->_appid;
$nativeObj["Package"] = $this->getPackageSign();
$nativeObj["TimeStamp"] = $this->getParams(self::TIMESTAMP);
$nativeObj["NonceStr"] = $this->getParams(self::OUT_TRADE_NO);
$nativeObj["RetCode"] = $retcode;
$nativeObj["RetErrMsg"] = $reterrmsg;
$nativeObj["AppSignature"] = $this->getPaySign($nativeObj);
$nativeObj["SignMethod"] = $this->_signtype;
$commonUtil = new CommonUtil();
$xml = $commonUtil->arrayToXml($nativeObj);
exit($xml);
}catch (Exception $e) {
echo ($e->getMessage());
}
}
/*
* 生成原生URL 以訂單號為參數 這是灌穿整個支付流程
*/
public function createNativeUrl($productid) {
$commonUtil = new CommonUtil();
$nativeObj["appid"] = $this->_appid;
$nativeObj["productid"] = urlencode($productid);
$nativeObj["timestamp"] = time();
$nativeObj["nonceStr"] = commonUtil::createNoncestr();
$nativeObj["sign"] = $this->getPaySign($nativeObj);
$nativeString = $commonUtil->formatPayUrlQuery($nativeObj, false);
return "weixin://wxpay/bizpayurl?".$nativeString;
}
/*
* 取IP地址
*/
public function getIp(){
switch(true) {
case !empty($_SERVER["HTTP_CLIENT_IP"]):
$ip = $_SERVER["HTTP_CLIENT_IP"];
break;
case !empty($_SERVER["HTTP_X_FORWARDED_FOR"]):
$ip = $_SERVER["HTTP_X_FORWARDED_FOR"];
break;
case !empty($_SERVER["REMOTE_ADDR"]):
$ip = $_SERVER["REMOTE_ADDR"];
break;
default:
$ip = "127.0.0.1";
}
return $ip;
}
}
class MD5SignUtil {
public function sign($content, $key) {
try {
if (null == $key) {
throw new Exception("財付通簽名key不能為空！" . "<br>");
}
if (null == $content) {
throw new Exception("財付通簽名內容不能為空" . "<br>");
}
$signStr = $content . "&key=" . $key;
return strtoupper(md5($signStr));
} catch (Exception $e) {
echo ($e->getMessage());
}
}
public static function verifySignature($content, $sign, $md5Key) {
$signStr = $content . "&key=" . $md5Key;
$calculateSign = strtolower(md5($signStr));
$tenpaySign = strtolower($sign);
return $calculateSign == $tenpaySign;
}
}
class CommonUtil {
public function genAllUrl($toURL, $paras) {
$allUrl = null;
if (null == $toURL) {
die("toURL is null");
}
if (strripos($toURL,"?") =="") {
$allUrl = $toURL . "?" . $paras;
} else {
$allUrl = $toURL . "&" . $paras;
}
return $allUrl;
}
//訂單號，可根據實際自定義
static public function createOrderNo() {
$nonce = CommonUtil::createNoncestr(4);
return strtoupper(date('ymds').substr(microtime(),2,4).$nonce);
}
//隨機字符串
static public function createNoncestr( $length = 16 ) {
$chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
$str ="";
for ( $i = 0; $i < $length; $i++ ) {
$str.= substr($chars, mt_rand(0, strlen($chars)-1), 1);
}
return $str;
}
public function splitParaStr($src, $token) {
$resMap = array();
$items = explode($token,$src);
foreach ($items as $item){
$paraAndValue = explode("=",$item);
if ($paraAndValue != "") {
$resMap[$paraAndValue[0]] = $paraAndValue[1];
}
}
return $resMap;
}
static function trimString($value) {
$ret = null;
if (null != $value) {
$ret = $value;
if (strlen($ret) == 0) {
$ret = null;
}
}
return $ret;
}
public function formatUrlQuery($paraMap, $urlencode) {
$buff = "";
ksort($paraMap, SORT_STRING);
foreach ($paraMap as $k => $v) {
if (null != $v && "null" != $v && "sign" != $k) {
if($urlencode) {
$v = urlencode($v);
}
$buff .= $k . "=" . $v . "&";
}
}
$reqPar = '';
if (strlen($buff) > 0) {
$reqPar = substr($buff, 0, strlen($buff)-1);
}
return $reqPar;
}
public function formatPayUrlQuery($paraMap, $urlencode) {
$buff = "";
ksort($paraMap, SORT_STRING);
foreach ($paraMap as $k => $v) {
if($urlencode){
$v = urlencode($v);
}
$buff .= strtolower($k) . "=" . $v . "&";
}
$reqPar = '';
if (strlen($buff) > 0) {
$reqPar = substr($buff, 0, strlen($buff)-1);
}
return $reqPar;
}
/*
* 輸出一級數組的xml格式
*/
public function arrayToXml($arr) {
$xml = "<xml>";
foreach ($arr as $key=>$val) {
if ($key == 'TimeStamp' || $key == 'RetCode') {
$xml.="<".$key.">".$val."</".$key.">";
} else
$xml.="<".$key."><![CDATA[".$val."]]></".$key.">";
}
$xml .= "</xml>";
return $xml;
}
}
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