PHP微信开发之二维码生成类

<?php/** * Created by PhpStorm. * User: bin * Date: 15-1-16 * Time: 上午9:48 */namespace HomeCommon;// 微信处理类set_time_limit(30);class Weixin{  //构造方法  static $qrcode_url = "https://api.weixin.qq.com/cgi-bin/qrcode/create?";  static $token_url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&";  static $qrcode_get_url = "https://mp.weixin.qq.com/cgi-bin/showqrcode?";  //生成二维码  public function getEwm($wechatid,$fqid,$type = 1){    $wechat = M("Member_public")->where(array("id"=> $wechatid))->find();    $appid = $wechat["appid"];    $secret = $wechat["secret"];    $ACCESS_TOKEN = $this->getToken($appid,$secret);    $url = $this->getQrcodeurl($ACCESS_TOKEN,$fqid,1);    return DownLoadQr($url,time());  }  protected function getQrcodeurl($ACCESS_TOKEN,$fqid,$type = 1){    $url = self::$qrcode_url."access_token=".$ACCESS_TOKEN;    if($type == 1){      //生成永久二维码      $qrcode= "{"action_name": "QR_LIMIT_SCENE", "action_info": {"scene": {"scene_id": ".$fqid."}}}";    }else{      //生成临时二维码      $qrcode = "{"expire_seconds": 1800, "action_name": "QR_SCENE", "action_info": {"scene": {"scene_id": ".$fqid."}}}";    }    $result = $this->http_post_data($url,$qrcode);    $oo = json_decode($result[1]);    if(!$oo->ticket){      $this->ErrorLogger("getQrcodeurl falied. Error Info: getQrcodeurl get failed");      exit();    }    $url = self::$qrcode_get_url."ticket=".$oo->ticket."";    return $url;  }  protected function getToken($appid,$secret){    $ACCESS_TOKEN = file_get_contents(self::$token_url."appid=$appid&secret=$secret");    $ACCESS_TOKEN = json_decode($ACCESS_TOKEN);    $ACCESS_TOKEN = $ACCESS_TOKEN->access_token;    return $ACCESS_TOKEN;  }  protected function http_post_data($url, $data_string) {    $ch = curl_init();    curl_setopt($ch, CURLOPT_POST, 1);    curl_setopt($ch, CURLOPT_URL, $url);    curl_setopt($ch, CURLOPT_POSTFIELDS, $data_string);    curl_setopt($ch, CURLOPT_HTTPHEADER, array(        "Content-Type: application/json; charset=utf-8",        "Content-Length: " . strlen($data_string))    );    ob_start();    curl_exec($ch);    if (curl_errno($ch)) {      $this->ErrorLogger("curl falied. Error Info: ".curl_error($ch));    }    $return_content = ob_get_contents();    ob_end_clean();    $return_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);    return array($return_code, $return_content);  }  //下载二维码到服务器  protected function DownLoadQr($url,$filestring){    if($url == ""){      return false;    }    $filename = $filestring.".jpg";    ob_start();    readfile($url);    $img=ob_get_contents();    ob_end_clean();    $size=strlen($img);    $fp2=fopen("./Uploads/qrcode/".$filename,"a");    if(fwrite($fp2,$img) === false){      $this->ErrorLogger("dolwload image falied. Error Info: 无法写入图片");      exit();    }    fclose($fp2);    return "./Uploads/qrcode/".$filename;  }  private function ErrorLogger($errMsg){    $logger = fopen("./ErrorLog.txt", "a+");    fwrite($logger, date("Y-m-d H:i:s")." Error Info : ".$errMsg."");  }}