本篇文章给大家带来的内容是关于小程序下如何获取access_token（代码示例），有一定的参考价值，有需要的朋友可以参考一下，希望对你有所帮助。
<button bindtap="token">获取token</button>
// pages/token/token.js
Page({
data: {
},
token:function(){
wx.request({
url: 'xxxx',
data:{},
success:function(res){
console.log(res.data);
//这里我是用的新浪云的sae,所以存在读写权限问题，打印出来的信息会存在告警
}
});
}
})<?php exit();?>
{"access_token":"","expire_time":0}<?php
//验证
function getToken(){
$timestamp = $_GET["timestamp"];
$nonce =$_GET["nonce"];
$token="hello hqtoken";
$signature=$_GET["signature"];
$array=array($timestamp,$nonce,$token);
sort($array);
$tmpstr=implode("",$array);
$tmpstr=sha1($tmpstr);
if($tmpstr == $signature){
echo $_GET["echostr"];
exit;
}
}
//获取AccessToken
function getAccessToken(){
$appid="你的appid";
$appsecret = "你的appsecret";
//文件存储
$data=json_decode(get_php_file("access_token.php"));
if($data->expire_time<time()){
$url="https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".$appid."&secret=".$appsecret;
$res=json_decode(httpGet($url));
$access_token=$res->access_token;
if($access_token){
$data->expire_time=time()+7000;
$data->access_token=$access_token;
set_php_file("access_token.php",json_encode($data));
}
}else{
$access_token=$data->access_token;
}
return $access_token;
}
//公共的curl方法
function httpGet($url){
$curl = curl_init();
curl_setopt($curl,CURLOPT_URL,$url);
curl_setopt($curl,CURLOPT_RETURNTRANSFER,1);
//如果用的是https，ssl安全验证
curl_setopt($curl,CURLOPT_SSL_VERIFYPEER,false);
curl_setopt($curl,CURLOPT_SSL_VERIFYHOST,false);
$res =curl_exec($curl);
curl_close($curl);
return $res;
}
function get_php_file($filename){
return trim(substr(file_get_contents($filename),15));
}
function set_php_file($filename,$content){
$fp=fopen($filename,"w");
fwrite($fp,"<?php exit();?>".$content);
fclose($fp);
}
echo getAccessToken();
?> 
