Check if folder exists?

Question

Yii

there is a folder structure in yii2
vendor
testcompany
directories
my.themes
packages
main.php
access to the vendor directory, as far as I understand, cannot be obtained,
how can I check the existence of the directory from the main.php file and if true then access the file from this directory

Answer 1

> if true then access the file from that directory
I think you are doing something wrong. What do you want to do? Describe in detail

Answer 2

php.net/manual/en/function.is-dir.php