六、wql的php防止表单重复提交

//防止表单重复提交
private function set_token()
{
    $_SESSION['token'] = md5(microtime(true));
}
//验证token
private function valid_token($token) {
    $return = $token === $_SESSION['token'] ? true : false;
    $this->set_token();

if(!isset($_SESSION['token']) || $_SESSION['token']=='')
    {
        $this->set_token();
    }

if($this->valid_token($data['access_token'])){}