Fatal error: Uncaught Error: Call to undefined function check_param() in D:\phpstudy_pro\WWW\webces\login.php:10 Stack trace: #0 {main} thrown in D:\phpstudy_pro\WWW\webces\login.php on line 10
<?php
$con=mysqli_connect("127.0.0.1","root","12345","web1"); //连接数据库，且定位到数据库web1
if(!$con){die("error:".mysqli_connect_error());} //如果连接失败就报错并且中断程序
$user=$_POST['user'];
$pass=$_POST['pass'];
if($user==null||$pass==null){
echo "<script>alert('你不是管理员吧！')</script>";
die("账号和密码不能为空!");
}
if(check_param($user)==true&&check_param($pass)==true){
$sql='select * from test where user='."'{$user}'and password="."'$pass';";
$res=mysqli_query($con,$sql);
$row=$res->num_rows; //将获取到的用户名和密码拿到数据库里面去查找匹配
if($row!=0)
{
echo "登录成功，欢迎您 {$user}！
";
}
else
{
echo "用户名或密码错误";
}
}
?>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body style="background-color:#0066CC">
<h2 align="center" style="color: white">管理后台登录</h2>
<form align="center" action="login.php" method="post" enctype="multipart/form-data">
<p style="width:100%;height:30px;display:block;line-height:200px;text-align:center;color:white;font-size:16px;">账号:<input type="text" name="user" value="" max="10"></p>
<p style="width:100%;height:30px;display:block;line-height:200px;text-align:center;color:white;font-size:16px;">密码:<input type="password" name="pass" value="" min="6" max="16"></p>
<p style="width:100%;height:30px;display:block;line-height:200px;text-align:center;"><input type="submit" name="submit" value="登录"></p>
</form>
</body>
</html>
Fatal error: Uncaught Error: Call to undefined function check_param() in D:\phpstudy_pro\WWW\webces\login.php:10 Stack trace: #0 {main} thrown in D:\phpstudy_pro\WWW\webces\login.php on line 10
