难点是请求https://api.weixin.qq.com/wxa/getwxacodeunlimit ，
的时候请求方式是raw，第二，由于返回的是图片的数据，因此，直接把返回的数据写进文件中就可以。
$appid = '';// $secret=''; $sendurl="https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".$appid."&secret=".$secret; $return =$this->http_get($sendurl1) ; $data=json_decode($return,true); $pic=$this->http_postraw("https://api.weixin.qq.com/wxa/getwxacodeunlimit?access_token=".$data['access_token'],$user['id']) ; $jpg = 'D://WWW/eschool/imgpublic/wxappshare_'.$data1['unionId'].'.jpg'; ob_end_clean(); //清空缓冲区 $fp = fopen($jpg,'w'); //写入图片 if(fwrite($fp,$pic)) { fclose($fp); } /** * POST 请求 * @param string $url * @param array $param */ private function http_postraw($url,$param){ $curl = curl_init(); if(stripos($url,"https://")!==FALSE){ curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE); curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false); curl_setopt($curl, CURLOPT_SSLVERSION, 1); //CURL_SSLVERSION_TLSv1 } curl_setopt_array($curl, array( CURLOPT_URL => $url, CURLOPT_RETURNTRANSFER => true, CURLOPT_ENCODING => "", CURLOPT_MAXREDIRS => 10, CURLOPT_TIMEOUT => 30, CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1, CURLOPT_CUSTOMREQUEST => "POST", CURLOPT_POSTFIELDS => "{\n\t\"page\":\"pages/index/index\",\n\t\"scene\":\"".$param."\",\n\t\"width\":\"280\"\n}\n", CURLOPT_HTTPHEADER => array( "Content-Type: application/json", "cache-control: no-cache" ), )); $response = curl_exec($curl); $err = curl_error($curl); curl_close($curl); if ($err) { return("cURL Error #:" . $err); } else { return($response) ; } }
