PHP实战：微信公众号点击菜单即可打开并登录微站的实现方法

{
     "button":[
     {
          "type":"view",
          "name":"登录微站",
          "url":"https://open.weixin.qq.com/connect/oauth2/authorize?appid={在微信公众平台后台获取这个APPID}&redirect_uri={你填写的回调域名下的地址}&response_type=code&scope=snsapi_base&state=1#wechat_redirect"
      }]
}

<?php
function curl_info($appid,$secret) {
  $ch = curl_init();
  curl_setopt($ch, CURLOPT_URL, "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".$appid."&secret=".$secret);
  curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "GET");
  curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
  curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
  curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (compatible; MSIE 5.01; Windows NT 5.0)');
  curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
  curl_setopt($ch, CURLOPT_AUTOREFERER, 1);
  // curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  $tmpInfo = curl_exec($ch);
  if (curl_errno($ch)) { 
    echo 'Errno'.curl_error($ch);
  }
  curl_close($ch);
  $arr= json_decode($tmpInfo,true);
  return $arr;
}
function curl_menu($ACCESS_TOKEN,$data) {
  $ch = curl_init();
  curl_setopt($ch, CURLOPT_URL, "https://api.weixin.qq.com/cgi-bin/menu/create?access_token=".$ACCESS_TOKEN);
  curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
  curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
  curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
  curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (compatible; MSIE 5.01; Windows NT 5.0)');
  curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
  curl_setopt($ch, CURLOPT_AUTOREFERER, 1);
  curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  $tmpInfo = curl_exec($ch);
  if (curl_errno($ch)) {
    echo 'Errno'.curl_error($ch);
  }
  curl_close($ch);
  $arr= json_decode($tmpInfo,true);
  return $arr;
}
function creat_menu() {
  $ACCESS_LIST= curl_info(APP_ID,APP_SCR);//获取到的凭证,你需要自己define APP_ID和APP_SCR(应用密钥),这个也是在微信公众平台后台开发者中心找
  if($ACCESS_LIST['access_token']!='') {
    $access_token = $ACCESS_LIST['access_token'];//获取到ACCESS_TOKEN
    $data = '把上面代码1拷贝黏贴在这里';
    $msg = curl_menu($access_token,preg_replace("#u([0-9a-f]+)#ie", "iconv('UCS-2', 'UTF-8', pack('H4', '1'))", $data));
    if($msg['errmsg']=='ok') {
      die('创建自定义菜单成功!');
    }
    else {
      die('创建自定义菜单失败!');
    }
  }
  else {
    die('创建失败,微信AppId或微信AppSecret填写错误');
  }
}
create_menu();
?>

if($_GET['code']) {
  $code = $_GET['code'];
  $data = get_by_curl('https://api.weixin.qq.com/sns/oauth2/access_token?appid=APPID&secret=APPSRC&code='.$code.'&grant_type=authorization_code');
  $data = json_decode($data);
  $openid = $data->openid;
  $access_token = $data->access_token;
}
function get_by_curl($url,$post = false){
    $ch = curl_init();
    curl_setopt($ch,CURLOPT_URL,$url);
    curl_setopt($ch, CURLOPT_HEADER, 0);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    if($post){
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS,$post);
    }
    $result = curl_exec($ch);
    curl_close($ch);
    return $result;
}