<?php

class Post {
    private $data = [];

    public function __construct($post) {
        $this->sanitize($post);
    }

    private function sanitize($post) {
        foreach ($post as $key => $value) {
            $this->data[$key] = is_array($value) 
                ? filter_var_array($value, FILTER_SANITIZE_FULL_SPECIAL_CHARS) 
                : filter_var($value, FILTER_SANITIZE_FULL_SPECIAL_CHARS);
        }
    }

    public function get($key, $default = null) {
        return $this->data[$key] ?? $default;
    }

    public function all() {
        return $this->data;
    }
}