Ошибка syntax error, unexpected 'INTO' (T_STRING)

<?php
    if (isset($_POST['name']) && isset($_POST['text'])){
    $login = $_POST['registr_form_login'];
    $password = $_POST['registr_form_password'];
    }
 
    $host = "localhost";
    $username = "root";
    $password = "";
    $db_name = "test4.ru";
    $tbl_name = "login/password";
 
    mysql_connect($host, $username, $password) or die("can't connect");
    INSERT INTO login/password VALUES ('','$login','$password','0');
?>

$result = $mysqli->query("INSERT INTO ".$db_table."VALUES ('',$login,$password,'0')");

//INSERT INTO `users` (`Id`, `login`, `password`, `rights`) VALUES (NULL, $login , $password , '0');
$query =  "INSERT INTO `users` (`Id`, `login`, `password`, `rights`) VALUES (NULL, $login , $password , '0');";

<?php
if (isset($_POST['form_login']) && isset($_POST['form_password'])){
$login = $_POST['form_login'];
$password = $_POST['form_password']; }
 
$db_host = "localhost"; 
$db_user = "root";
$db_password = "";
$db_base = 'test';
$db_table = "users";
$mysqli = new mysqli($db_host,$db_user,$db_password,$db_base);
 
if ($mysqli->connect_error) { //// Если есть ошибка соединения, выводим её и убиваем подключение
die('Ошибка : ('. $mysqli->connect_errno .') '. $mysqli->connect_error); 
}
 
//INSERT INTO `users` (`Id`, `login`, `password`, `rights`) VALUES (NULL, $login , $password , '0');
 
 
$query =  "INSERT INTO `users` (`Id`, `login`, `password`, `rights`) VALUES (NULL, $login , $password , '0');";
//$result = $mysqli->query("INSERT INTO ".$db_table."VALUES ('',$login,$password,'0')");
 
mysqli_close($mysqli);
?>