PHP implements WeChat payment function development code sharing

This article mainly introduces the development process of PHP WeChat payment in detail. It has certain reference value. Interested friends can refer to it. I hope it can help everyone.

1. Development environment
Thinkphp 3.2.3
WeChat: Service account, certified
Development domain name: http://test.paywechat.com (since The defined domain name is not accessible from the external network)

2. Requires relevant documents and permissions
WeChat payment needs to be activated
WeChat public platform developer documentation: http:// mp.weixin.qq.com/wiki/home/index.html
WeChat Payment Developer Documentation: https://pay.weixin.qq.com/wiki/doc/api/index.html
WeChat Payment SDK download address: https://pay.weixin.qq.com/wiki/doc/api/jsapi.php?chapter=11_1

3. Development
Download WeChat To pay for the PHP version of the SDK, the file directory is as shown below:

Put the Cert and Lib directories of the WeChat payment SDK Thinkphp, the directory is

Now we will introduce the WeChat payment authorization directory issue. The first is to fill in the payment authorization directory in the WeChat payment development configuration,

Then fill in the js interface security domain.

Finally set the web page authorization

After these settings are completed, it is basically half completed. Pay attention to the set directory and the directory in my thinkphp.

4. WeChat payment configuration

Fill in the relevant configuration correctly.

##[php] view plain copy

1. ##/**

2. ##* Configure account information

3. */

5. ##class WxPayConfig

6. ##{

7. //========[Basic information settings]==================== =================

8. //

9. /**

10. * TODO: Modify the configuration here to apply for your own merchant information

11. * WeChat public account information configuration

12. ## *

## * APPID : APPID bound to payment (must be configured, can be viewed in the account opening email)
*
* MCHID: Merchant ID (must be configured, can be viewed in the account opening email)
*
* KEY: Merchant payment key, refer to the account opening email settings (must be configured, log in to the merchant platform to set it yourself )
* Setting address: https://pay.weixin.qq.com/index.php/account/api_cert

18. ## *

19. ## * APPSECRET： Public account secert (only required for JSAPI payment, log in to the public platform and enter the developer center to set),

21. ## * Obtain address: https://mp.weixin.qq.com/advanced/advanced?action=dev&t=advanced/dev&token=2005451881&lang=zh_CN

22. * @var string

23. ## */

24. const APPID = '' ;

25. ##const

    MCHID = '';

##const

26. KEY = '';

const

27. APPSECRET = '';

28. ##//=======【 Certificate path settings】======================================

29. /**

30. * TODO ：Set the merchant certificate path

31. * Certificate path, please note that the absolute path should be filled in (only required for refunds and order cancellations, you can log in Merchant platform download,

33. * API certificate download address: https://pay.weixin.qq.com/index.php/account/api_cert, you need to install the merchant operation certificate before downloading)

34. ## * @var path

35. */

36. const SSLCERT_PATH = '. ./cert/apiclient_cert.pem';

37. const SSLKEY_PATH = '../cert/apiclient_key.pem';

39. ##//========[curl proxy settings]======================== ============

40. ##/**

## * TODO: Set the proxy machine here. Set it only when you need a proxy. If you don’t need a proxy, please set it to 0.0.0.0 and 0

41. ## * This routine uses the HTTP POST method through curl. The proxy server can be modified here,

42. * The default is CURL_PROXY_HOST=0.0.0.0 and CURL_PROXY_PORT=0, the proxy is not enabled at this time (set it if necessary)

43. * @var unknown_type

44. ##*/

46. const CURL_PROXY_HOST = "0.0.0.0";// "10.152.18.220";

47. ##const CURL_PROXY_PORT = 0; //8080;

49. ##//========[Report information configuration]================================== ====

50. ##/**

51. * TODO: Interface call reporting level, default error reporting (note: reporting timeout is [1s], reporting regardless of success or failure [Never throw an exception],

52. * Will not affect the interface calling process), after turning on the reporting, it is convenient for WeChat monitoring request calls For quality, it is recommended to at least

53. * Enable error reporting.

## * Reporting level, 0. Close reporting; 1. Only errors are reported; 2. Full reporting
* @var int

55. ##*/

56. const
57. REPORT_LEVENL = 1;

    }

Start posting the code now:

# #[php] view plain copy

1. ##namespace Wechat\ Controller;

2. ##use

   Think\Controller;

3. /**

## * Parent class controller, need to inherit
* @file ParentController.class.php

5. ## * @author Gary

6. # * @date August 4, 2015

7. * @todu

8. */

10. ##class ParentController extends Controller {

11. protected $options = array (

12. 'token' => '', // Fill in the key you set

13. ##'encodingaeskey' => '', // Fill in the EncodingAESKey for encryption

14. 'appid' => '', // Fill in the advanced The app id of the calling function

15. ##'appsecret'

    => '', // Fill in the key for the advanced calling function

16.  'debug' => false,  

17.  'logcallback' => ''  

18.  );   

19.  public $errCode = 40001;   

20.  public $errMsg = "no access";   

21.   

22.  /** 

23.  * 获取access_token 

24.  * @return mixed|boolean|unknown 

25.  */  

26.  public function getToken(){  

27.  $cache_token = S('exp_wechat_pay_token');  

28.  if(!empty($cache_token)){  

29.  return $cache_token;  

30.  }  

31.  $url = 'https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=%s&secret=%s';  

32.  $url = sprintf($url,$this->options['appid'],$this->options['appsecret']);   

33.  $result = $this->http_get($url);  

34.  $result = json_decode($result,true);   

35.  if(empty($result)){  

36.  return false;  

37.  }   

38.  S('exp_wechat_pay_token',$result['access_token'],array('type'=>'file','expire'=>3600));  

39.  return $result['access_token'];  

40.  }  

41.   

42.  /**

43. ## * Send customer service message

44. * @param array $data Message structure {"touser":"OPENID","msgtype":"news","news":{...}}

45. */  

46.  public function sendCustomMessage($data){  

47.  $token = $this->getToken();  

48.  if (empty($token)) return false;   

49.  $url = 'https://api.weixin.qq.com/cgi-bin/message/custom/send?access_token=%s';  

50.  $url = sprintf($url,$token);  

51.  $result = $this->http_post($url,self::json_encode($data));  

52.  if ($result)  

53.  {  

54.  $json = json_decode($result,true);  

55. if (!$json || !empty($json['errcode'])) {

56. $this->errCode = $json['errcode' ];  

57. #$this->errMsg = $json['errmsg'];  

58. #return false;  

59. }

60. return $json;  

61. }

62. return false;  

63. }

64. #

65.  /**

66. ## * Send template message

67. * @param unknown $data

68. ## * @return boolean|unknown

69. */  

70.  

    public function sendTemplateMessage($data){  

71.  

    $token = $this->getToken();  

72.  

    if (empty($token)) return false;  

73.  

    $url = "https://api.weixin.qq.com/cgi-bin/message/template/send?access_token=%s";  

74.  $url = sprintf($url,$token);  

75.  $result = $this->http_post($url,self::json_encode($data));  

76.  if ($result)  

77.  {  

78.  $json = json_decode($result,true);  

79. if (!$json || !empty($json['errcode'])) {

80. $this->errCode = $json['errcode' ];  

81. #$this->errMsg = $json['errmsg'];  

82. #return false;  

83. }

84. return $json;  

85. }

86. return false;  

87. }

88. #

89.   

90.  public function getFileCache($name){  

91.  return S($name);  

92.  }  

93.   

94.  /**

95. ## * WeChat API does not support Chinese escaped json structure

96. * @param array $arr

97. */  

98.  static function json_encode($arr) {  

99.  $parts = array ();  

100.  $is_list = false;  

101.  //Find out if the given array is a numerical array  

102.  $keys = array_keys ( $arr );  

103.  $max_length = count ( $arr ) - 1;  

104.  if (($keys [0] === 0) && ($keys [$max_length] === $max_length )) { //See if the first key is 0 and last key is length - 1  

105.  $is_list = true;  

106.  for($i = 0; $i count ( $keys ); $i ++) { //See if each key correspondes to its position  

107.  if ($i != $keys [$i]) { //A key fails at position check.  

108.   $is_list = false; //It is an associative array.  

109.   break;  

110.  }  

111.  }  

112.  }  

113.  foreach ( $arr as $key => $value ) {  

114.  if (is_array ( $value )) { //Custom handling for arrays  

115.  if ($is_list)  

116.   $parts [] = self::json_encode ( $value ); /* :RECURSION: */  

117.  else  

118.   $parts [] = '"' . $key . '":' . self::json_encode ( $value ); /* :RECURSION: */  

119.  } else {  

120.  $str = '';  

121.  if (! $is_list)  

122.   $str = '"' . $key . '":';  

123.  //Custom handling for multiple data types  

124.  if (!is_string ( $value ) && is_numeric ( $value ) && $value

125.   $str .= $value; //Numbers  

126.  elseif ($value === false)  

127.  $str .= 'false'; //The booleans  

128.  elseif ($value === true)  

129.  $str .= 'true';  

130.  else  

131.   $str .= '"' . addslashes ( $value ) . '"'; //All other things  

132.  // :TODO: Is there any more datatype we should be in the lookout for? (Object?)  

133.  $parts [] = $str;  

134.  }  

135.  }  

136.  $json = implode ( ',', $parts );  

137.  if ($is_list)  

138. return '[' . $json . ']'; //Return numerical JSON

139. ##return '{' . $json . '}'; //Return associative JSON

140. }

142. /**

143. +--------------------------------- ----------------------------

144. * Generate random string

145. +------------------ ----------------------------------------

146. * @param int $length The length of the random string to be generated

147. * @param string $type Random code type: 0, numbers + upper and lower case letters; 1, numbers; 2, lower case letters; 3, upper case letters; 4, special characters; -1, numbers + upper and lower case letters + special characters

148.  +---------------------------------------------------------- 

149.  * @return string 

150.  +---------------------------------------------------------- 

151.  */  

152.  static public function randCode($length = 5, $type = 2){  

153.  $arr = array(1 => "0123456789", 2 => "abcdefghijklmnopqrstuvwxyz", 3 => "ABCDEFGHIJKLMNOPQRSTUVWXYZ", 4 => "~@#$%^&*(){}[]|");  

154.  if ($type == 0) {  

155.  array_pop($arr);  

156.  $string = implode("", $arr);  

157.  } elseif ($type == "-1") {  

158.  $string = implode("", $arr);  

159.  } else {  

160.  $string = $arr[$type];  

161.  }  

162.  $count = strlen($string) - 1;  

163.  $code = '';  

164.  for ($i = 0; $i $length; $i++) {  

165.  $code .= $string[rand(0, $count)];  

166.  }  

167.  return $code;  

168.  }   

169.   

170.   

171.  /** 

172.  * GET 请求 

173.  * @param string $url 

174.  */  

175.  private function http_get($url){  

176.  $oCurl = curl_init();  

177.  if(stripos($url,"https://")!==FALSE){  

178.  curl_setopt($oCurl, CURLOPT_SSL_VERIFYPEER, FALSE);  

179.  curl_setopt($oCurl, CURLOPT_SSL_VERIFYHOST, FALSE);  

180.  curl_setopt($oCurl, CURLOPT_SSLVERSION, 1); //CURL_SSLVERSION_TLSv1  

181.  }  

182.  curl_setopt($oCurl, CURLOPT_URL, $url);  

183.  curl_setopt($oCurl, CURLOPT_RETURNTRANSFER, 1 );  

184.  $sContent = curl_exec($oCurl);  

185.  $aStatus = curl_getinfo($oCurl);  

186.  curl_close($oCurl);  

187.  if(intval($aStatus["http_code"])==200){  

188.  return $sContent;  

189.  }else{  

190.  return false;  

191.  }  

192.  }  

193.   

194.  /**

195. ## * POST request

196. # # * @param string $url

197. ## * @param array $param

198. * @param boolean $post_file Whether to upload files

## * @return string content
*/

200.   

      
private

201.  function http_post($url,$param,$post_file=false){  

      
$oCurl

202.  = curl_init();  

203.  if(stripos($url,"https://")!==FALSE){  

204.  curl_setopt($oCurl, CURLOPT_SSL_VERIFYPEER, FALSE);  

205.  curl_setopt($oCurl, CURLOPT_SSL_VERIFYHOST, false);  

206.  curl_setopt($oCurl, CURLOPT_SSLVERSION, 1); //CURL_SSLVERSION_TLSv1  

207.  }  

208.  if (is_string($param) || $post_file) {  

209.  $strPOST = $param;  

210.  } else {  

211.  $aPOST = array();  

212.  foreach($param as $key=>$val){  

213.  $aPOST[] = $key."=".urlencode($val);  

214.  }  

215.  $strPOST = join("&", $aPOST);  

216.  }  

217.  curl_setopt($oCurl, CURLOPT_URL, $url);  

218.  curl_setopt($oCurl, CURLOPT_RETURNTRANSFER, 1 );  

219.  curl_setopt($oCurl, CURLOPT_POST,true);  

220.  curl_setopt($oCurl, CURLOPT_POSTFIELDS,$strPOST);  

221.  $sContent = curl_exec($oCurl);  

222.  $aStatus = curl_getinfo($oCurl);  

223.  curl_close($oCurl);  

224.  if(intval($aStatus["http_code"])==200){  

225.  return $sContent;  

226.  }else{  

227.  return false;  

228.  }  

229.  }  

230. }  

[php] view plain copy

1. namespace Wechat\Controller;  

2. use Wechat\Controller\ParentController;  

3. /**

4. ## * WeChat payment test controller

5. * @file TestController.class.php

6. ## * @author Gary

7. ## * @date August 4, 2015

8. * @todu

9. */

     

10. class TestController extends ParentController {  

11.  private $_order_body = 'xxx';  

12.  private $_order_goods_tag = 'xxx';  

13.  public function __construct(){  

14.  parent::__construct();  

15.  require_once ROOT_PATH."Api/lib/WxPay.Api.php";  

16.  require_once ROOT_PATH."Api/lib/WxPay.JsApiPay.php";  

17.  }  

18.   

19. public function index(){

20. //①. Get user openid

21. ## $tools = new \JsApiPay();

22. # #$openId = $tools->GetOpenid();

23. //②. Unified order placement

24. ##$input

    = new \WxPayUnifiedOrder();

#//Product description

25. ##$input
26. ->SetBody(

    $this->_order_body); ##//Additional data, you can add the data you need, and WeChat will return an asynchronous callback This data will be appended

28. $input->SetAttach('xxx');

29. //Merchant order number

30. ##$out_trade_no = \WxPayConfig::MCHID.date("YmdHis");

31. ##$input->SetOut_trade_no($out_trade_no);

32. #//Total amount, the total amount of the order, can only be an integer, the unit is cents

33. $input

    ->SetTotal_fee(1);

34. //Transaction start time

35. $input

    ->SetTime_start(date("YmdHis"));

36. //Transaction end time

37. $input->SetTime_expire(date("YmdHis ", time() + 600));

38. ##//Product tag

39. ##$input->SetGoods_tag($this->_order_goods_tag);

40. #//Notification address, receive WeChat payment asynchronous notification callback address SITE_URL=http://test .paywechat.com/Charge

##$notify_url

41. = SITE_URL. '/index.php/Test/notify.html';

$input

42. ->SetNotify_url($notify_url);

    ##/ /Trade Type

43. ##$input

->SetTrade_type(

44. "JSAPI"); ##$input

    ->SetOpenid(
45. $openId

    );

46. $order = \WxPayApi::unifiedOrder($input);

47. $jsApiParameters = $tools->GetJsApiParameters($order);

48. ##//Get the shared delivery address js function parameters

49. ##$editAddress = $tools->GetEditAddressParameters();

51. ## $this

    ->assign('openId',$openId);

##$this

52. ->assign('jsApiParameters',$jsApiParameters);

    ##$this
53. ->assign (

    'editAddress',$editAddress);

54. $this->display();

55. # # }

57. #/**

58. ## * Asynchronous notification callback method

59. */

60. public

    function notify (){

##require_once

61. ROOT_PATH."Api/lib/notify.php ";

    ##$notify
62. =

    new \PayNotifyCallBack(); ##$notify

->Handle(false);

63. //The IsSuccess here is a method customized by me. I will post the code of this file later for reference.

64. $is_success

=

65. $notify ->IsSuccess();

66.  $bdata = $is_success['data'];   

67.  //支付成功  

68.  if($is_success['code'] == 1){   

69.  $news = array(  

70.   'touser' => $bdata['openid'],  

71.   'msgtype' => 'news',  

72.   'news' => array (  

73. 'articles'=> array (

74. array(

75. ##'title' => 'Order payment successful',

76. ##​

    'description' => "Payment amount: {$bdata['total_fee']}\n".

77. ##"WeChat order number: {$bdata['transaction_id']}\n"

78. 'picurl'

    => '',

79. 'url'

    => ''

)

81. ## )

82. )

83. ## );

84. //Send WeChat payment notification

85. # #$this->sendCustomMessage($news);

86. }else{//Payment failed

88. }

89. ## }

91. ##/**

## * Payment success page
* Unreliable callbacks
*/
public

95. function ajax_PaySuccess(){

//Order number
$out_trade_no

97. = I('post.out_trade_no');

98. //Payment amount

99. $ total_fee = I('post.total_fee');

100. /*Related logic processing*/

102. ## }

view plain copy

1. #html>
##

head>

2. ##meta http-equiv="content-type" content="text/html;charset=utf-8" />

3. ##meta name="viewport" content="width= device-width, initial-scale=1"/>

4. ##< ;

   title>WeChat payment sample-paymenttitle >

5. script type= "text/javascript">

6. ## //Call WeChat JS api payment

7. function jsApiCall()

8. {

9. WeixinJSBridge.invoke(

10. ## 'getBrandWCPayRequest',

11. {$jsApiParameters},

12. function(res){

## WeixinJSBridge.log( res.err_msg);

13. ## //Cancel payment

14. ## if(

    res.err_msg
15. == 'get_brand_wcpay_request:cancel'){

    ## //Event logic for processing payment cancellation

16. ## }else if(res.err_msg

    == "get_brand_wcpay_request:ok"){

17. /*Use the above method to determine the front-end return. The WeChat team solemnly reminds:

18. res.err_msg will be used when the user pays Returns ok after success, but it does not guarantee that it is absolutely reliable

19. ## Here you can use Ajax to submit to the background and process some logs, such as ajax_PaySuccess in the Test controller. method.

20. */

21. }

22. alert(res.err_code+res.err_desc+res.err_msg);

## }
);

25.  }  

26.   

27.  function callpay()  

28.  {  

29.  if (typeof WeixinJSBridge == "undefined"){  

30.  if( document.addEventListener ){  

31.  document.addEventListener('WeixinJSBridgeReady', jsApiCall, false);  

32.  }else if (document.attachEvent){  

33.  document.attachEvent('WeixinJSBridgeReady', jsApiCall);   

34.  document.attachEvent('onWeixinJSBridgeReady', jsApiCall);  

35.  }  

36.  }else{  

37.  jsApiCall();  

38.  }  

39.  }  

40.  //获取共享地址  

41.  function editAddress()  

42.  {  

43.  WeixinJSBridge.invoke(  

44.  'editAddress',  

45.  {$editAddress},  

46.  function(res){  

47.  var value1 = res.proviceFirstStageName;  

48.  var value2 = res.addressCitySecondStageName;  

49.  var value3 = res.addressCountiesThirdStageName;  

50.  var value4 = res.addressDetailInfo;  

51.  var tel = res.telNumber;   

52.  alert(value1 + value2 + value3 + value4 + ":" + tel);  

53.  }  

54.  );  

55.  }  

56.   

57.  window.onload = function(){  

58.  if (typeof WeixinJSBridge == "undefined"){  

59.  if( document.addEventListener ){  

60.  document.addEventListener('WeixinJSBridgeReady', editAddress, false);  

61.  }else if (document.attachEvent){  

62.  document.attachEvent('WeixinJSBridgeReady', editAddress);   

63.  document.attachEvent('onWeixinJSBridgeReady', editAddress);  

64.  }  

65.  }else{  

66.  editAddress();  

67.  }  

68.  };  

69.   

70.  script>  

71. head>  

72. body>  

73.  br/>  

74. font color= "#9ACD32">b>The payment amount for this order isspan style="color:#f00;font-size:50px">1 pointspan>钱b>font>< ;br/>br/>

75.  p align="center">  

76.  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()" >立即支付button>  

77.  p>  

78. ##body>

79. ##html>

notify.php file code, here is a custom method newly added in the official file.

#[php]

copy

##require_once

1. ROOT_PATH."Api/lib/WxPay.Api.php";

require_once

2. ROOT_PATH.'Api/lib/WxPay.Notify.php';

require_once

3. ROOT_PATH.'Api/lib/log.php';

4.   

5. //初始化日志  

6. $logHandler= new \CLogFileHandler(ROOT_PATH."/logs/".date('Y-m-d').'.log');  

7. $log = \Log::Init($logHandler, 15);  

8.   

9. class PayNotifyCallBack extends WxPayNotify  

10. {  

11.  protected $para = array('code'=>0,'data'=>'');  

12.  //查询订单  

13.  public function Queryorder($transaction_id)  

14.  {  

15.  $input = new \WxPayOrderQuery();  

16.  $input->SetTransaction_id($transaction_id);  

17.  $result = \WxPayApi::orderQuery($input);  

18.  \Log::DEBUG("query:" . json_encode($result));  

19.  if(array_key_exists("return_code", $result)  

20.  && array_key_exists("result_code", $result)  

21.  && $result["return_code"] == "SUCCESS"  

22.  && $result["result_code"] == "SUCCESS")  

23.  {  

24.  return true;  

25.  }  

26. $this->para['code'] = 0;

27. $this->para['data'] = '';

28. ##return false;

29. }

31. //Rewrite the callback processing function

32. ##public function NotifyProcess($data, &$msg)

33. {

##\Log::DEBUG(
34. " call back:"

    . json_encode($data));

35. $notfiyOutput

    = array();

37. if(!array_key_exists("transaction_id", $data)){

38. $msg = "Input parameters are incorrect";

39. $this->para['code'] = 0;

40. $this->para['data'] = '';

41. ##return false;

42. }

43. //Query the order to determine if the order is genuine sex

44. if(!$this->Queryorder($ data["transaction_id"])){

45. # #$msg = "Order query failed";

46. $this->para['code'] = 0;

47. $this->para['data'] = '';

48. #return false;

49. }

51. $this->para['code'] = 1;

52. $this->para['data'] = $data;

53. return true;

54. }

56. /**

57. ## * Custom method to detect whether the callback on WeChat is successful

58. * @return multitype:number string

59. */

60. ##public function IsSuccess(){

61. ##return

    $this->para;

    ## }

62. }

63. This is basically completed. You can open

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