跳轉問題，登錄成功后進入index.php之前一直彈出驗證碼錯誤，然后又返回到login.php。
<?php
require_once?'../include.php';
$username?=?$_POST['username'];
$password?=?$_POST['password'];
$verify?=?$_POST['verify'];
$verify1?=?$_SESSION['verify'];
if?($verify==$verify1){
????$sql?=?"select?*from?imooc_admin?where?username='{$username}'and?password?='{$password}'";
????$row?=?checkAdmin($sql);
????if?($row){
????????$_SESSION['adminName']?=?$res['username'];
????????$_SESSION['adminId']?=?$row['id'];
????????alertMes("登陸成功","admin.php");
????}
????else{
????????alertMes("登錄失敗，請重新登錄","login.php");
????}
}
else?if($verify!=$verify1){
????alertMes("驗證碼錯誤，請重新登錄","admin.php");//bug
}index.php被我改成了admin.php.
2017-02-21
驗證碼錯誤表明用戶輸入的驗證碼和程序生成的驗證碼不一致，你的程序生成的驗證碼是純數字還是數字英文混合的？