PHP（下）作业提交 - 已锁定
<!DOCTYPE html>
<html>
<head>
<title>请输入账号密码</title>
</head>
<body>
<form action="1.php" method="get">
<p>帐号：<input type="text" name="username"/></p>
<p>密码：<input type="text" name="password"></p>
<input type="submit" value="登录">
</form>
</body>
</html>
1.php
<?php
$db_name="test";
$server_name="localhost";
$conn=mysqli_connect($server_name,"root","",$db_name);
if(!$conn)//连不上
{
die("连接错误" . mysqli_connect_error());
exit;
}
$curDb=mysqli_select_db($conn,$db_name);
if(!$curDb)
{
die("不存在".$db_name);
exit;
}
$user_name=$_GET['username'];//获取用户名和密码
$password=$_GET['password'];
$login="select user_name,password from users where user_name='".$user_name."'" ;
echo $login ;
if($user_name)
{
$result=mysqli_query($conn,$login);//查询用户名
$rows=mysqli_num_rows($result);//结果遍历
if($rows)
{
$mima="select user_name,password from users where user_name='".$user_name."'and password='".$password."'";
$result2=mysqli_query($conn,$mima);//查询用户名
$rows2=mysqli_num_rows($result2);//结果遍历
if($rows)
{ echo "登陆成功！";}
else
{ echo "用户名或密码错误！";}
}
else
{
echo "用户名或密码错误！";
exit;
}
}
else
{
echo "用户名或密码错误！";
}
?>
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