Файлы tpl

if($_SESSION['small_nick'] == 1) {
$error_message = 'Слишком короткий ник!';
$error = file_get_contents('templates/errors.tpl');
$error = str_replace('{error}', $error_message, $error);
echo $error;}
 
if($_SESSION['big_nick'] == 1) {
$error_message2 = 'Слишком длинный ник!';
$error2 = file_get_contents('templates/errors.tpl');
$error2 = str_replace('{error}', $error_message2, $error2);
echo $error2;}

<?php
 
require_once "lib/functions.php";
 
if(isset($_POST['reg'])) {
 
session_start();
unset($_SESSION['small_nick']);
unset($_SESSION['big_nick']);
unset($_SESSION['small_password']);
unset($_SESSION['big_password']);
unset($_SESSION['empty_r_password']);
unset($_SESSION['empty_email']);
unset($_SESSION['error_passwords']);
unset($_SESSION['incorrect_email']);
unset($_SESSION['success']);
 
$nick = htmlspecialchars($_POST['nick']);
$password = htmlspecialchars($_POST['password']);
$r_password = htmlspecialchars($_POST['r_password']);
$email = htmlspecialchars($_POST['email']);
$select_sex = htmlspecialchars($_POST['select_sex']);
$bad = false;
 
if(strlen($nick) < 3) {
$bad = true;
$_SESSION['small_nick'] = 1;}
 
if(strlen($nick) > 32) {
$bad = true;
$_SESSION['big_nick'] = 1;}
 
if(strlen($password) < 3) {
$bad = true;
$_SESSION['small_password'] = 1;}
 
if(strlen($password) > 32) {
$bad = true;
$_SESSION['big_password'] = 1;}
 
if(empty($r_password)) {
$bad = true;
$_SESSION['empty_r_password'] = 1;}
 
if(empty($email)) {
$bad = true;
$_SESSION['empty_email'] = 1;}
 
if($password != $r_password) {
$bad = true;
$_SESSION['error_passwords'] = 1;}
 
if(!filter_var($email, FILTER_VALIDATE_EMAIL)) {
$bad = true;
$_SESSION['incorrect_email'] = 1;}
 
if(!$bad) {
reg_user($nick, $password, $email, $select_sex);
$_SESSION['success'] = 1;}
 
}
 
?>