不管怎么做驗證碼總是報錯，而且有如下報錯代碼，大神們求解
<?php?
require_once '../include.php';
$username=$_POST['username'];
// $username=addslashes($username);
$password=md5($_POST['password']);
$verify=$_POST['verify'];????／／7
$verify1=$_SESSION['verify'];／／8
$autoFlag=$_POST['autoFlag'];
if($verify==$verify1){
$sql="select * from imooc_admin where username='{$username}' and password='{$password}'";
$row=checkAdmin($sql);
print_r($row);
if($row){
2015-09-23
使用session時要在最前面加入 session_start();