密码保护进入prestashop

Question

我正在尝试为index.php添加密码保护表单，以便人们无法在没有密码的情况下进入网站。我不想将htaccess用于htaccess的视觉问题。

<?php
    if( !empty ($_POST['password'] ) ) {
        $password = "1234";
        $pw = md5($_POST['password']);
        $valid_password = md5($password);
        if( $pw != $valid_password ) {
            echo "Error! You do not have access to this websitesite.";
        } else {
            require(dirname(__FILE__).'/config/config.inc.php');
            Dispatcher::getInstance()->dispatch();
        }
    }else{
        echo '
        <h2> Please Type Your Password to Enter to the website. </h2>
    <form name="monkeybusiness" method="post" action="\index.php">
      <input type="password" id="password" name="password />
      <input type="submit" id="submit" value="Enter" />
    </form>';
    }

但输入密码时我会收到以下错误;

Forbidden

You do not have permission to access this document.

有谁知道这个错误的原因是什么？ 感谢。