意外的＆＃39;其他＆＃39;在$ _GET请求

Question

我一直在研究这段代码，错误引起的任何事情都没有任何意义，我已经搜索过但我无法找到可行的解决方案，或者任何人解释为什么我可以在将来阻止它。

抛出此错误：

  

解析错误：语法错误，意外＆＃39;否则＆＃39; （T_ELSE）在第139行的/home/cabox/workspace/up/frontend/pages/settings.php中

第139行是第一个else语句：

if (isset($_GET['act'])) {
        $act = $_GET['act'];
        $arr = array('delete');
        $arr2 = array('blacklist');
        $arr3 = array('unblacklist');
        if (in_array($act, $arr)) {
                $de = $odb->prepare("DELETE FROM login_attempts WHERE id = :i");
                $de->execute(array(":i" => $tid));
                echo '<div class="alert alert-success">log deleted.  </div><meta http-equiv="refresh" content="2;url=settings.php">';
                break;
            }else{
                echo '<div class="alert alert-danger">Something went wrong, please try again</div>';
            }
        }else{
        }
        if (in_array($act, $arr2)) {
            echo 'div class="alert alert-danger">blacklist</div>';
        }else{
            $getblack = $_GET['ip'];
            $de2 = $odb->prepare("INSERT INTO blacklist VALUES(null, :ip)");
            $de2 = $odb->execute(array(":ip" => $getblack));
        }else{
            echo '<div class="alert alert-danger">Something went wrong, please try again</div>';
        }
}