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PHP解析小程序返回的buffer信息，并解析成图片 需要引入 GuzzleHttp 包composer require guzzlehttp/guzzle核心代码如下：<?php require __DIR__ . './vendor/autoload.php'; use GuzzleHttp\Client; use GuzzleHttp\Exception\GuzzleException; /** * get client * @return Client */ function httpGetClient() { static $client ; if (!$client) { $client = new Client(); } return $client; } //GET function httpGet($url) { $client = httpGetClient(); $options = [ 'verify' => false, ]; $response = $client->get($url,$options); return $response->getBody()->getContents(); } // POSTBODY function httpPostBody($url, $requestData=[], $header=[]) { $client = httpGetClient(); $options = [ 'headers' => $header, 'body' => json_encode($requestData,JSON_UNESCAPED_UNICODE ), 'verify' => false, ]; $response = $client->post($url, $options); if ($response->getStatusCode()==200) { return $response->getBody()->getContents(); }else{ return null; } } //postForm function httpPostForm($url, $requestData, $header) { $client = new Client(['verify' => false]); try { $response = $client->request('post', $url, ['form_params' => $requestData, 'headers' => $header]); $response->getStatusCode(); // 200 $response->getHeaderLine('content-type'); if ($response->getStatusCode()==200) { return [true,$response->getBody()->getContents()]; }else{ return [false,[]]; } } catch (GuzzleException $e) { } return [false,[]]; } function getAccessToken(){ $appid = ''; $secret = ''; //获取access_token $access_token_url = 'https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid='.$appid.'&secret='.$secret; $access_token_data = httpGet($access_token_url); $access_token_data = json_decode($access_token_data,true); return $access_token_data['access_token']; } function getQrcode($access_token){ $url = 'https://api.weixin.qq.com/cgi-bin/wxaapp/createwxaqrcode?access_token='.$access_token; $requestData = [ 'path'=>'pages/order-status/index?loose_id=1', 'width'=>430, ]; $header = []; return httpPostBody($url,$requestData,$header); } $access_token = getAccessToken(); //$access_token = ""; $data = getQrcode($access_token); if(is_null(json_decode($data))){ //不是json数据， 有数据流，返回值为null $jpg = $data; //创建文件写入 $file = fopen("img/test.jpg",'w'); fwrite($file,$jpg); fclose($file); }else{ //不是数据流，则代表有错误发生 $data_array = json_decode($data,true); print_r($data_array); } ?> 如果提示你无法写入， 记得新建一个文件夹： img ,并给可写权限
