1 <?php 2  3 namespace appadmincontroller; 4  5 use thinkfacadeEnv; 6 use appadminmodelCompany; 7  8 class Index extends Common { 9 10 public function index() {11 $res = 1;12 $qrcode = self::getQrcode($res,‘pages/index/index‘);13 dump($qrcode);14  }15 /**16  * 获取小程序二维码17  * @param int $good_id 商品ID18  * @param varchar $samll_program_url 要跳转的路径（小程序路径）19 */ 20 protected static function getQrcode($good_id,$samll_program_url)21  {22 require_once(Env::get(‘root_path‘) . ‘vendor/Other/JSSDK.php‘);23 24 $filename = "qrcode_" . $good_id . ".jpg";//要生成的图片名字25 26 $IMG_PATH = config(‘app.public.qrcode‘);//保存服务器路径27 $shop_url = config(‘app.public.host‘);//网址28 if (file_exists(‘./‘.$IMG_PATH .‘/‘. $filename)) { //存在返回图片路径29 return $shop_url . $IMG_PATH .‘/‘. $filename;30  }31 32 $jssdk = new JSSDK(config(‘app.wxapp.app_id‘), config(‘app.wxapp.app_secret‘));33 $access_token = $jssdk->getAccessTokenMinProgram();34 $scene = $good_id;35 $data = ‘{"scene":"‘ . $scene . ‘","page":"‘ . $samll_program_url . ‘","width":280}‘;36 $jpg = posturl(‘https://api.weixin.qq.com/wxa/getwxacodeunlimit?access_token=‘ . $access_token, $data);//二进制原始数据37 38 $res = file_put_contents(‘./‘.$IMG_PATH .‘/‘. $filename,$jpg);39 40 return $shop_url . $IMG_PATH .‘/‘. $filename;41  }42 }

 1 <?php 2  3 class JSSDK { 4 private $appId; 5 private $appSecret; 6  7 public function __construct($appId, $appSecret) { 8 $this->appId = $appId; 9 $this->appSecret = $appSecret; 10  } 11  12 public function getSignPackage($url = null) { 13 $jsapiTicket = $this->getJsApiTicket(); 14 // 注意 URL 一定要动态获取，不能 hardcode. 15 if($url === null) 16  { 17 if (isset($_SERVER[‘HTTP_REFERER‘])) { 18 $url = $_SERVER[‘HTTP_REFERER‘]; 19 } else { 20 $url = ‘‘; 21  } 22  } 23 $timestamp = time(); 24 $nonceStr = $this->createNonceStr(); 25  26 // 这里参数的顺序要按照 key 值 ASCII 码升序排序 27 $string = "jsapi_ticket=$jsapiTicket&noncestr=$nonceStr&timestamp=$timestamp&url=$url"; 28  29 $signature = sha1($string); 30  31 $signPackage = array( 32 "app_id" => $this->appId, 33 "nonceStr" => $nonceStr, 34 "timestamp" => $timestamp, 35 "url" => $url, 36 "signature" => $signature, 37 "rawString" => $string 38  ); 39 return $signPackage;  40  } 41  42 private function createNonceStr($length = 16) { 43 $chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"; 44 $str = ""; 45 for ($i = 0; $i < $length; $i++) { 46 $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1); 47  } 48 return $str; 49  } 50  51 private function getJsApiTicket() { 52  53 $accessToken = $this->getAccessToken(); 54 // 如果是企业号用以下 URL 获取 ticket 55  // $url = "https://qyapi.weixin.qq.com/cgi-bin/get_jsapi_ticket?access_token=$accessToken"; 56 $url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?type=jsapi&access_token=$accessToken"; 57 $res = json_decode($this->getUrl($url),true); 58 if (isset($res[‘ticket‘])) { 59 $ticket = $res[‘ticket‘];  60 } else { 61 $ticket = ‘‘; 62  } 63  64 return $ticket; 65  } 66  67 public function getAccessToken() { 68  69 if ($access_token = Cache::get("access_token")) { 70 return $access_token; 71  } 72  73 // 如果是企业号用以下URL获取access_token 74  // $url = "https://qyapi.weixin.qq.com/cgi-bin/gettoken?corpid=$this->appId&corpsecret=$this->appSecret"; 75 $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$this->appId&secret=$this->appSecret"; 76  77 $res = json_decode($this->getUrl($url),true); 78  79 if (isset($res["access_token"])) { 80 $access_token = $res["access_token"];  81 return $access_token; 82 } else {  83 return ‘‘; 84  }  85  86  } 87  88 public function getAccessTokenMinProgram() { 89  90 if ($access_token = Cache::get("access_token_min_program")) { 91 return $access_token; 92  } 93 // 如果是企业号用以下URL获取access_token 94  // $url = "https://qyapi.weixin.qq.com/cgi-bin/gettoken?corpid=$this->appId&corpsecret=$this->appSecret"; 95 $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$this->appId&secret=$this->appSecret"; 96 $res = json_decode($this->getUrl($url),true); 97  98 if (isset($res["access_token"])) { 99 $access_token = $res["access_token"];100 return $access_token;101 } else {102 return ‘‘;103  }104 105  }106 private function getUrl($url){107 $ch = curl_init();108 curl_setopt($ch, CURLOPT_URL, $url);109 curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);110 curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);111 curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);112 $output = curl_exec($ch);113 curl_close($ch);114 return $output;115  }116 117 }