PHP整合微信H5支付，親測可用！
首先建立個工具類
<?php
/**
* 微信支付伺服器端下單
* 微信APP支付文檔位址: https://pay.weixin.qq.com/wiki/doc/api/app.php?chapter=8_6
* 使用示例
* 構造方法參數
* 'appid' => //填寫微信配置設定的公衆賬号ID
* 'mch_id' => //填寫微信支付配置設定的商戶号
* 'notify_url'=> //填寫微信支付結果回調位址
* 'key' => //填寫微信商戶支付密鑰
* );
* 統一下單方法
* $WechatAppPay = new wechatAppPay($options);
* $params['body'] = '商品描述'; //商品描述
* $params['out_trade_no'] = '1217752501201407'; //自定義的訂單号，不能重複
* $params['total_fee'] = '100'; //訂單金額 隻能為整數 機關為分
* $params['trade_type'] = 'APP'; //交易類型 JSAPI | NATIVE |APP | WAP
* $wechatAppPay->unifiedOrder( $params );
*/
class WxH5Pay
{
//接口API URL字首
const API_URL_PREFIX = 'https://api.mch.weixin.qq.com';
//下單位址URL
const UNIFIEDORDER_URL = "/pay/unifiedorder";
//查詢訂單URL
const ORDERQUERY_URL = "/pay/orderquery";
//關閉訂單URL
const CLOSEORDER_URL = "/pay/closeorder";
//公衆賬号ID
private $appid;
//商戶号
private $mch_id;
//随機字元串
private $nonce_str;
//簽名
private $sign;
//商品描述
private $body;
//商戶訂單号
private $out_trade_no;
//支付總金額
private $total_fee;
//終端IP
private $spbill_create_ip;
//支付結果回調通知位址
private $notify_url;
//交易類型
private $trade_type;
//支付密鑰
private $key;
//證書路徑
private $SSLCERT_PATH;
private $SSLKEY_PATH;
//所有參數
private $params = array();
public function __construct($appid, $mch_id, $notify_url, $key)
{
$this->appid = $appid;
$this->mch_id = $mch_id;
$this->notify_url = $notify_url;
$this->key = $key;
}
/**
* 下單方法
* @param $params 下單參數
*/
public function unifiedOrder($params)
{
$this->body = $params['body'];
$this->out_trade_no = $params['out_trade_no'];
$this->total_fee = $params['total_fee'];
$this->trade_type = $params['trade_type'];
$this->scene_info = $params['scene_info'];
$this->nonce_str = $this->genRandomString();
$this->spbill_create_ip = $_SERVER['REMOTE_ADDR'];
$this->params['appid'] = $this->appid;
$this->params['mch_id'] = $this->mch_id;
$this->params['nonce_str'] = $this->nonce_str;
$this->params['body'] = $this->body;
$this->params['out_trade_no'] = $this->out_trade_no;
$this->params['total_fee'] = $this->total_fee;
$this->params['spbill_create_ip'] = $this->spbill_create_ip;
$this->params['notify_url'] = $this->notify_url;
$this->params['trade_type'] = $this->trade_type;
$this->params['scene_info'] = $this->scene_info;
//擷取簽名資料
$this->sign = $this->MakeSign($this->params);
$this->params['sign'] = $this->sign;
$xml = $this->data_to_xml($this->params);
$response = $this->postXmlCurl($xml, self::API_URL_PREFIX . self::UNIFIEDORDER_URL);
if (!$response) {
return false;
}
$result = $this->xml_to_data($response);
if (!empty($result['result_code']) && !empty($result['err_code'])) {
$result['err_msg'] = $this->error_code($result['err_code']);
}
return $result;
}
/**
* 查詢訂單資訊
* @param $out_trade_no 訂單号
* @return array
*/
public function orderQuery($out_trade_no)
{
$this->params['appid'] = $this->appid;
$this->params['mch_id'] = $this->mch_id;
$this->params['nonce_str'] = $this->genRandomString();
$this->params['out_trade_no'] = $out_trade_no;
//擷取簽名資料
$this->sign = $this->MakeSign($this->params);
$this->params['sign'] = $this->sign;
$xml = $this->data_to_xml($this->params);
$response = $this->postXmlCurl($xml, self::API_URL_PREFIX . self::ORDERQUERY_URL);
if (!$response) {
return false;
}
$result = $this->xml_to_data($response);
if (!empty($result['result_code']) && !empty($result['err_code'])) {
$result['err_msg'] = $this->error_code($result['err_code']);
}
return $result;
}
/**
* 關閉訂單
* @param $out_trade_no 訂單号
* @return array
*/
public function closeOrder($out_trade_no)
{
$this->params['appid'] = $this->appid;
$this->params['mch_id'] = $this->mch_id;
$this->params['nonce_str'] = $this->genRandomString();
$this->params['out_trade_no'] = $out_trade_no;
//擷取簽名資料
$this->sign = $this->MakeSign($this->params);
$this->params['sign'] = $this->sign;
$xml = $this->data_to_xml($this->params);
$response = $this->postXmlCurl($xml, self::API_URL_PREFIX . self::CLOSEORDER_URL);
if (!$response) {
return false;
}
$result = $this->xml_to_data($response);
return $result;
}
/**
*
* 擷取支付結果通知資料
* return array
*/
public function getNotifyData()
{
//擷取通知的資料
$xml = $GLOBALS['HTTP_RAW_POST_DATA'];
//echo 123;die;
$data = array();
if (empty($xml)) {
return false;
}
$data = $this->xml_to_data($xml);
if (!empty($data['return_code'])) {
if ($data['return_code'] == 'FAIL') {
return false;
}
}
return $data;
}
/**
* 接收通知成功後應答輸出XML資料
* @param string $xml
*/
public function replyNotify()
{
$data['return_code'] = 'SUCCESS';
$data['return_msg'] = 'OK';
$xml = $this->data_to_xml($data);
echo $xml;
die();
}
/**
* 生成APP端支付參數
* @param $prepayid 預支付id
*/
public function getAppPayParams($prepayid)
{
$data['appid'] = $this->appid;
$data['partnerid'] = $this->mch_id;
$data['prepayid'] = $prepayid;
$data['package'] = 'Sign=WXPay';
$data['noncestr'] = $this->genRandomString();
$data['timestamp'] = time();
$data['sign'] = $this->MakeSign($data);
return $data;
}
/**
* 生成簽名
* @return 簽名
*/
public function MakeSign($params)
{
//簽名步驟一：按字典序排序數組參數
ksort($params);
$string = $this->ToUrlParams($params);
//簽名步驟二：在string後加入KEY
$string = $string . "&key=" . $this->key;
//簽名步驟三：MD5加密
$string = md5($string);
//簽名步驟四：所有字元轉為大寫
$result = strtoupper($string);
return $result;
}
/**
* 将參數拼接為url: key=value&key=value
* @param $params
* @return string
*/
public function ToUrlParams($params)
{
$string = '';
if (!empty($params)) {
$array = array();
foreach ($params as $key => $value) {
$array[] = $key . '=' . $value;
}
$string = implode("&", $array);
}
return $string;
}
/**
* 輸出xml字元
* @param $params 參數名稱
* return string 傳回組裝的xml
**/
public function data_to_xml($params)
{
if (!is_array($params) || count($params) <= 0) {
return false;
}
$xml = "<xml>";
foreach ($params as $key => $val) {
if (is_numeric($val)) {
$xml .= "<" . $key . ">" . $val . "</" . $key . ">";
} else {
$xml .= "<" . $key . "><![CDATA[" . $val . "]]></" . $key . ">";
}
}
$xml .= "</xml>";
return $xml;
}
/**
* 将xml轉為array
* @param string $xml
* return array
*/
public function xml_to_data($xml)
{
if (!$xml) {
return false;
}
//将XML轉為array
//禁止引用外部xml實體
libxml_disable_entity_loader(true);
$data = json_decode(json_encode(simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA)), true);
return $data;
}
/**
* 擷取毫秒級别的時間戳
*/
private static function getMillisecond()
{
//擷取毫秒的時間戳
$time = explode(" ", microtime());
$time = $time[1] . ($time[0] * 1000);
$time2 = explode(".", $time);
$time = $time2[0];
return $time;
}
/**
* 産生一個指定長度的随機字元串,并傳回給使用者
* @param type $len 産生字元串的長度
* @return string 随機字元串
*/
private function genRandomString($len = 32)
{
$chars = array(
"a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k",
"l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v",
"w", "x", "y", "z", "A", "B", "C", "D", "E", "F", "G",
"H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R",
"S", "T", "U", "V", "W", "X", "Y", "Z", "0", "1", "2",
"3", "4", "5", "6", "7", "8", "9"
);
$charsLen = count($chars) - 1;
// 将數組打亂
shuffle($chars);
$output = "";
for ($i = 0; $i < $len; $i++) {
$output .= $chars[mt_rand(0, $charsLen)];
}
return $output;
}
/**
* 以post方式送出xml到對應的接口url
*
* @param string $xml 需要post的xml資料
* @param string $url url
* @param bool $useCert 是否需要證書，預設不需要
* @param int $second url執行逾時時間，預設30s
* @throws WxPayException
*/
private function postXmlCurl($xml, $url, $useCert = false, $second = 30)
{
$ch = curl_init();
//設定逾時
curl_setopt($ch, CURLOPT_TIMEOUT, $second);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
//設定header
curl_setopt($ch, CURLOPT_HEADER, FALSE);
//要求結果為字元串且輸出到螢幕上
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
if ($useCert == true) {
//設定證書
//使用證書：cert 與 key 分别屬于兩個.pem檔案
curl_setopt($ch, CURLOPT_SSLCERTTYPE, 'PEM');
//curl_setopt($ch,CURLOPT_SSLCERT, WxPayConfig::SSLCERT_PATH);
curl_setopt($ch, CURLOPT_SSLKEYTYPE, 'PEM');
//curl_setopt($ch,CURLOPT_SSLKEY, WxPayConfig::SSLKEY_PATH);
}
//post送出方式
curl_setopt($ch, CURLOPT_POST, TRUE);
curl_setopt($ch, CURLOPT_POSTFIELDS, $xml);
//運作curl
$data = curl_exec($ch);
//傳回結果
if ($data) {
curl_close($ch);
return $data;
} else {
$error = curl_errno($ch);
curl_close($ch);
return false;
}
}
/**
* 錯誤代碼
* @param $code 伺服器輸出的錯誤代碼
* return string
*/
public function error_code($code)
{
$errList = array(
'NOAUTH' => '商戶未開通此接口權限',
'NOTENOUGH' => '使用者帳号餘額不足',
'ORDERNOTEXIST' => '訂單号不存在',
'ORDERPAID' => '商戶訂單已支付，無需重複操作',
'ORDERCLOSED' => '目前訂單已關閉，無法支付',
'SYSTEMERROR' => '系統錯誤!系統逾時',
'APPID_NOT_EXIST' => '參數中缺少APPID',
'MCHID_NOT_EXIST' => '參數中缺少MCHID',
'APPID_MCHID_NOT_MATCH' => 'appid和mch_id不比對',
'LACK_PARAMS' => '缺少必要的請求參數',
'OUT_TRADE_NO_USED' => '同一筆交易不能多次送出',
'SIGNERROR' => '參數簽名結果不正确',
'XML_FORMAT_ERROR' => 'XML格式錯誤',
'REQUIRE_POST_METHOD' => '未使用post傳遞參數 ',
'POST_DATA_EMPTY' => 'post資料不能為空',
'NOT_UTF8' => '未使用指定編碼格式',
);
if (array_key_exists($code, $errList)) {
return $errList[$code];
}
}
}
建立方法調用微信H5支付
public function pay($data)
{
$appid = '服務号appid';
$mch_id = '商戶号id';
$key = '商戶key';
$notify_url = '回調位址';
$wechatAppPay = new WxH5Pay($appid, $mch_id, $notify_url, $key);
$params['body'] = '商品描述';
$params['out_trade_no'] = '自定義的訂單号';
$params['total_fee'] = '訂單金額 隻能為整數 機關為分';
$params['trade_type'] = 'MWEB'; // 交易類型 MWEB
$host = "http://xxxx";
$params['scene_info'] = '{"h5_info": {"type":"Wap","wap_url": ' . $host . ',"wap_name":"xxx"}}';
$result = $wechatAppPay->unifiedOrder($params);
if (isset($result['err_msg'])) {
return false; // 錯誤傳回資訊，看需求定義傳回！
}
$url = $result['mweb_url'] . '&redirect_url=';//可以在MWEB_URL後拼接上redirect_url參數，來指定回調頁面
return $url;
}
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