battles/user_anketa.php

<?php

use Battles\Template;
use Battles\User;

require_once 'functions.php';
$name = filter_input(INPUT_POST, 'name', FILTER_SANITIZE_STRING);
$oldpsw = filter_input(INPUT_POST, 'oldpsw', FILTER_SANITIZE_SPECIAL_CHARS);
$newpsw = filter_input(INPUT_POST, 'newpsw', FILTER_SANITIZE_SPECIAL_CHARS);
$hobbie = filter_input(INPUT_POST, 'hobbie', FILTER_SANITIZE_STRING);
$hobbie = str_replace("\\n", "<br />", $hobbie);
$hobbie = str_replace("\\r", "", $hobbie);
$hobbie = str_replace("&lt;br&nbsp;/&gt;", "<br />", $hobbie);

if ($name || $hobbie) {
    if (strlen($hobbie) > User::INFO_CHAR_LIMIT) {
        err('Максимальная длинна поля Хобби: ' . User::INFO_CHAR_LIMIT . ' символов!');
    } else {
        if ($name) {
            User::getInstance()->setRealname($name);
        }
        if ($hobbie) {
            User::getInstance()->setInfo($hobbie);
        }
        User::getInstance()->saveUser();
    }
}
if ($oldpsw && $newpsw) {
    if (password_verify($oldpsw, User::getInstance()->getPass())) {
        User::getInstance()->setPass(password_hash($newpsw, PASSWORD_DEFAULT));
        User::getInstance()->saveUser();
    } else {
        err('Неверный текущий пароль!');
    }
}
Template::header('Анкета');
?>
<a href="main.php">← на главную</a>
<h1>Анкета персонажа <?= User::getInstance()->getLogin() ?></h1>
<form method="post">
    <label>
        <input name="name" placeholder="Реальное имя" value="<?= User::getInstance()->getRealname() ?>">
        Реальное имя
    </label><br>
    <textarea name="hobbie" placeholder="Хобби"><?= User::getInstance()->getInfo() ?></textarea><br>
    <input name="submit" type="submit">
</form>
<h1>Безопасность</h1>
<form method="post">
    <input placeholder="Старый пароль" name="oldpsw">
    <input placeholder="Новый пароль" name="newpsw">
    <input type="submit">
</form>