直接上代码
<?php
namespace app\api\controller;
use think\Controller;
use think\Db;
class WxpayController extends Controller{
private $config = array(
'appid' => "",
'mch_id' => "",
'api_key' => ""
);
public function getPrePayOrder($out_trade_no, $total_fee, $notify_url, $body){
$url = "https://api.mch.weixin.qq.com/pay/unifiedorder";
$onoce_str = $this->getRandChar(32);
$data["appid"] = $this->config["appid"];
$data["body"] = $body;
$data["mch_id"] = $this->config['mch_id'];
$data["nonce_str"] = $onoce_str;
$data["notify_url"] = $notify_url;
$data["out_trade_no"] = $out_trade_no;
$data["total_fee"] = '1';
$data["spbill_create_ip"] = $this->get_client_ip();
$data["trade_type"] = "APP";
$s = $this->getSign($data);
$data["sign"] = $s;
$xml = $this->arrayToXml($data);
$response = $this->postXmlCurl($xml, $url);
$result = $this->xmltoarr($response);
return json_encode($result);
}
public function getOrder($prepayId){
$data["appid"] = $this->config["appid"];
$data["noncestr"] = $this->getRandChar(32);
$data["package"] = "Sign=WXPay";
$data["partnerid"] = $this->config['mch_id'];
$data["prepayid"] = $prepayId;
$data["timestamp"] = time();
$s = $this->getSign($data, false);
$data["sign"] = $s;
return json_encode($data);
}
public function getSign($Obj)
{
foreach ($Obj as $k => $v)
{
$Parameters[strtolower($k)] = $v;
}
ksort($Parameters);
$String = $this->formatBizQueryParaMap($Parameters, false);
$String = $String."&key=".$this->config['api_key'];
$result_ = strtoupper(md5($String));
return $result_;
}
public function getRandChar($length){
$str = null;
$strPol = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789abcdefghijklmnopqrstuvwxyz";
$max = strlen($strPol)-1;
for($i=0;$i<$length;$i++){
$str.=$strPol[rand(0,$max)];
}
return $str;
}
public function arrayToXml($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 $xml;
}
public function postXmlCurl($xml,$url,$second=30)
{
$ch = curl_init();
curl_setopt($ch,CURLOPT_TIMEOUT,$second);
curl_setopt($ch,CURLOPT_URL, $url);
curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,FALSE);
curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,FALSE);
curl_setopt($ch, CURLOPT_HEADER, FALSE);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
curl_setopt($ch, CURLOPT_POST, TRUE);
curl_setopt($ch, CURLOPT_POSTFIELDS, $xml);
$data = curl_exec($ch);
if($data)
{
curl_close($ch);
return $data;
}
else
{
$error = curl_errno($ch);
echo "curl出错，错误码:$error"."<br>";
echo "<a href='http://curl.haxx.se/libcurl/c/libcurl-errors.html'>错误原因查询</a></br>";
curl_close($ch);
return false;
}
}
public function get_client_ip()
{
if ($_SERVER['REMOTE_ADDR']) {
$cip = $_SERVER['REMOTE_ADDR'];
} elseif (getenv("REMOTE_ADDR")) {
$cip = getenv("REMOTE_ADDR");
} elseif (getenv("HTTP_CLIENT_IP")) {
$cip = getenv("HTTP_CLIENT_IP");
} else {
$cip = "unknown";
}
return $cip;
}
public function formatBizQueryParaMap($paraMap, $urlencode)
{
$buff = "";
ksort($paraMap);
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 $reqPar;
}
public function xmlstr_to_array($xmlstr) {
$doc = new DOMDocument();
$doc->loadXML($xmlstr);
return $this->domnode_to_array($doc->documentElement);
}
public function domnode_to_array($node) {
$output = array();
switch ($node->nodeType) {
case XML_CDATA_SECTION_NODE:
case XML_TEXT_NODE:
$output = trim($node->textContent);
break;
case XML_ELEMENT_NODE:
for ($i=0, $m=$node->childNodes->length; $i<$m; $i++) {
$child = $node->childNodes->item($i);
$v = $this->domnode_to_array($child);
if(isset($child->tagName)) {
$t = $child->tagName;
if(!isset($output[$t])) {
$output[$t] = array();
}
$output[$t][] = $v;
}
elseif($v) {
$output = (string
) $v;
}
}
if(is_array($output)) {
if($node->attributes->length) {
$a = array();
foreach($node->attributes as $attrName => $attrNode) {
$a[$attrName] = (string
) $attrNode->value;
}
$output['@attributes'] = $a;
}
foreach ($output as $t => $v) {
if(is_array($v) && count($v)==1 && $t!='@attributes') {
$output[$t] = $v[0];
}
}
}
break;
}
return $output;
}
public function recharge_notify(){
$str='<xml><return_code><![CDATA[SUCCESS]]></return_code><return_msg><![CDATA[OK]]></return_msg></xml>';
return $str;
}
public function xmltoarr($xml)
{
$data = simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA | LIBXML_NOBLANKS);
if (is_object($data) && get_class($data) === 'SimpleXMLElement') {
$data = self
::arrarval($data);
}
return $data;
}
private static function arrarval($data)
{
if (is_object($data) && get_class($data) === 'SimpleXMLElement') {
$data = (array) $data;
}
if (is_array($data)) {
foreach ($data as $index => $value) {
$data[$index] = self
::arrarval($value);
}
}
return $data;
}
}
先调用getPrePayOrder返回给前端，然后前端生成prepayId，进行二次签名
