doLogin.php

<?php

require_once '../include.php';

$username=$_POST['username'];

$password=md5($_POST['password']);

$verify=$_POST['verify'];

$verify1=$_SESSION['verify'];

if ($verify==$verify1) {

$sql="select * from imooc_admin where username='{$username}'and password='{$password}'";

$res=checkAdmin($sql);

var_dump($res);

}else {

echo "<script> alert('验证码错误!');</script>";

echo "<script>window.location='login.php';</script>";

}