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<?php
session_start();
?>
<!DOCTYPE html>
<html>
<head>
    <title>Login page!</title>
</head>
<body>
<center>
<?php
$conn=mysqli_connect("localhost","root","","login");
$user=@$_POST['txtname'];
$pass=@$_POST['txtpass'];
$query=mysqli_query($conn,"SELECT * FROM credentials WHERE username='".$user."'");
$record=mysqli_fetch_array($query);
if($user==$record['username'])
{
if($pass==$record['password'])
{
$_SESSION['txtname']=$_POST['txtname'];
?>
<?php
header('location:success.php');
}
else
{

?>
<?php
header('location:wrongpassword.php');
}
}
else
{
?>
<?php
header('signup.php');
}
mysqli_close($conn);
?>
<table border cellpadding="4" cellpadding="">
<tr><th>
<form method="post">
<input type="text" name="txtname" placeholder="Username" required><br></th></tr>
<tr><th>
<input type="password" name="txtpass" placeholder="Password"><br><br></th></tr>
<tr><th>
<button type="submit" name="submit">Login &raquo;</button>&nbsp;&nbsp;
<button type="reset">Reset</button></th></tr>
</form>
</table>
</center>
</body>
</html>