微信小程序指定页面生成二维码
文档：
php
public function index()
{
$access_token = $this->getAccessToken('appid','secret');
$tk = json_decode($access_token)->access_token;
$urlss = 'https://api.weixin.qq.com/wxa/getwxacodeunlimit?access_token='.$tk;
$_pageData = [
"page"=> 'pages/yarn/yarn', //例如：pages/home/index
"scene"=>"&a=1", //参数绑定
"width" => 430 //宽度
];
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $urlss);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($_pageData));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HEADER, false);
$data = curl_exec($ch);
curl_close($ch);
header("Content-Type: image/jpeg;text/html; charset=utf-8");
echo $data;
}
public function getAccessToken($appid,$secret){
$urlss = 'https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid='.$appid.'&secret='.$secret;
return file_get_contents($urlss);
}html
<img src="/index/index/index">
小程序页面接收扫码传参，例：接收传入id
onLoad(e) {
const scene = decodeURIComponent(e.scene)
if(scene){
let data = this.str2Obj(scene);
if(data.id){
this.id = data.id;
}
}
}
methods: {
str2Obj(t) {
const params = {};
t.split('&').forEach(item => {
const [key, value] = item.split('=');
params[key] = value;
});
return params
}
}