最近在做小程序需要生成小程序二维码，在网上找了一大堆小程序生成二维码的方法，虽然可以生成，但是由于在小程序端生成二维码涉及到获取access_token等安全性不是很好被微信拒了，于是不懂后端的我在网上找到了这套代码，亲测有效
<?php header('Content-Type: text/html;charset=utf-8'); header('Access-Control-Allow-Origin:*'); header('Access-Control-Allow-Methods:*'); header('Access-Control-Allow-Credentials: true'); header('Access-Control-Allow-Headers:*'); //配置APPID、APPSECRET $APPID = "APPID"; $APPSECRET = "APPSECRET"; //获取access_token $access_token = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$APPID&secret=$APPSECRET"; //缓存access_token session_start(); $_SESSION['access_token'] = ""; $_SESSION['expires_in'] = 0; $_PLAN_ID = $_GET['planId']; $ACCESS_TOKEN = ""; if(!isset($_SESSION['access_token']) || (isset($_SESSION['expires_in']) && time() > $_SESSION['expires_in'])) { $json = httpRequest( $access_token ); $json = json_decode($json,true); // var_dump($json); $_SESSION['access_token'] = $json['access_token']; $_SESSION['expires_in'] = time()+7200; $ACCESS_TOKEN = $json["access_token"]; } else{ $ACCESS_TOKEN = $_SESSION["access_token"]; } //构建请求二维码参数 //path是扫描二维码跳转的小程序路径，可以带参数?id=xxx //width是二维码宽度 $qcode ="https://api.weixin.qq.com/cgi-bin/wxaapp/createwxaqrcode?access_token=$ACCESS_TOKEN"; $param = json_encode(array("path"=>"pages/index/index?planId=$_PLAN_ID","width"=> 298)); // echo $_PLAN_ID //POST参数 $result = httpRequest( $qcode, $param,"POST"); //生成二维码 file_put_contents("qrcode.png", $result); $base64_image ="data:image/jpeg;base64,".base64_encode( $result ); echo $base64_image; //把请求发送到微信服务器换取二维码 function httpRequest($url, $data='', $method='GET'){ $curl = curl_init(); curl_setopt($curl, CURLOPT_URL, $url); curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0); curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 0); curl_setopt($curl, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']); curl_setopt($curl, CURLOPT_FOLLOWLOCATION, 1); curl_setopt($curl, CURLOPT_AUTOREFERER, 1); if($method=='POST') { curl_setopt($curl, CURLOPT_POST, 1); if ($data != '') { curl_setopt($curl, CURLOPT_POSTFIELDS, $data); } } curl_setopt($curl, CURLOPT_TIMEOUT, 30); curl_setopt($curl, CURLOPT_HEADER, 0); curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); $result = curl_exec($curl); curl_close($curl); return $result; } ?>