这篇文章主要介绍了PHP微信开发之二维码生成类,本文使用微信接口实现二维码的生成,并直接给出示例代码,需要的朋友可以参考下。

1. <?php
2. /**
3. * Created by PhpStorm.
4. * User: bin
5. * Date: 15-1-16
6. * Time: 上午9:48
7. */
8. namespace Home\Common;
9. // 微信处理类
10. set_time_limit(30);
11. class Weixin{
12. //构造方法
13. static $qrcode_url = "https://api.weixin.qq.com/cgi-bin/qrcode/create?";
14. static $token_url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&";
15. static $qrcode_get_url = "https://mp.weixin.qq.com/cgi-bin/showqrcode?";
16. //生成二维码
17. public function getEwm($wechatid,$fqid,$type = 1){
18. $wechat = M('Member_public')->where(array('id'=> $wechatid))->find();
19. $appid = $wechat['appid'];
20. $secret = $wechat['secret'];
21. $ACCESS_TOKEN = $this->getToken($appid,$secret);
22. $url = $this->getQrcodeurl($ACCESS_TOKEN,$fqid,1);
23. return DownLoadQr($url,time());
24. }
25. protected function getQrcodeurl($ACCESS_TOKEN,$fqid,$type = 1){
26. $url = self::$qrcode_url.'access_token='.$ACCESS_TOKEN;
27. if($type == 1){
28. //生成永久二维码
29. $qrcode= '{"action_name": "QR_LIMIT_SCENE", "action_info": {"scene": {"scene_id": '.$fqid.'}}}';
30. }else{
31. //生成临时二维码
32. $qrcode = '{"expire_seconds": 1800, "action_name": "QR_SCENE", "action_info": {"scene": {"scene_id": '.$fqid.'}}}';
33. }
34. $result = $this->http_post_data($url,$qrcode);
35. $oo = json_decode($result[1]);
36. if(!$oo->ticket){
37. $this->ErrorLogger('getQrcodeurl falied. Error Info: getQrcodeurl get failed');
38. exit();
39. }
40. $url = self::$qrcode_get_url.'ticket='.$oo->ticket.'';
41. return $url;
42. }
43. protected function getToken($appid,$secret){
44. $ACCESS_TOKEN = file_get_contents(self::$token_url."app);
45. $ACCESS_TOKEN = json_decode($ACCESS_TOKEN);
46. $ACCESS_TOKEN = $ACCESS_TOKEN->access_token;
47. return $ACCESS_TOKEN;
48. }
49. protected function http_post_data($url, $data_string) {
50. $ch = curl_init();
51. curl_setopt($ch, CURLOPT_POST, 1);
52. curl_setopt($ch, CURLOPT_URL, $url);
53. curl_setopt($ch, CURLOPT_POSTFIELDS, $data_string);
54. curl_setopt($ch, CURLOPT_HTTPHEADER, array(
55. 'Content-Type: application/json; charset=utf-8',
56. 'Content-Length: ' . strlen($data_string))
57. );
58. ob_start();
59. curl_exec($ch);
60. if (curl_errno($ch)) {
61. $this->ErrorLogger('curl falied. Error Info: '.curl_error($ch));
62. }
63. $return_content = ob_get_contents();
64. ob_end_clean();
65. $return_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
66. return array($return_code, $return_content);
67. }
68. //下载二维码到服务器
69. protected function DownLoadQr($url,$filestring){
70. if($url == ""){
71. return false;
72. }
73. $filename = $filestring.'.jpg';
74. ob_start();
75. readfile($url);
76. $img=ob_get_contents();
77. ob_end_clean();
78. $size=strlen($img);
79. $fp2=fopen('./Uploads/qrcode/'.$filename,"a");
80. if(fwrite($fp2,$img) === false){
81. $this->ErrorLogger('dolwload image falied. Error Info: 无法写入图片');
82. exit();
83. }
84. fclose($fp2);
85. return './Uploads/qrcode/'.$filename;
86. }
87. private function ErrorLogger($errMsg){
88. $logger = fopen('./ErrorLog.txt', 'a+');
89. fwrite($logger, date('Y-m-d H:i:s')." Error Info : ".$errMsg."\r\n");
90. }
91. }