Is it safe to do so?

Question

PHP

Hello.
Is it safe to connect the core site system like this? I mean ../

<?php

include("../include/core.php");

//тут пошел код

?>

I read somewhere that it's not very safe to connect like that?

Answer 1

And what, exactly, is the problem? And what alternatives do you see?
Or are you talking about include vs require vs include_once vs require_once?

Answer 2

It's dangerous like this:

<?php

include($_GET['lang']."/phrases.php");

//тут пошел код

?>

Answer 3

Weird. And what is the danger of such a connection?
In fact, there are three connection options:
The first option is generally useless. There are not many options left.