Why does PATH_SEPARATOR output ':' instead of '/'?

Question

PHP

get_include_path() . PATH_SEPARATOR . "Application" . PATH_SEPARATOR . "AppControllers" on OPENSERVER gave the correct empty, now instead of '/' for some reason it goes ':', that is,

/usr/share/php:Application:AppControllers

Answer 1

https://www.php.net/manual/ru/dir.constants.php
You are confusing PATH_SEPARATOR(the one in the environment variable PATH) andDIRECTORY_SEPARATOR