getting array of uri segments excluding subdirectory in base_url()

I am trying to find an optimal way to get an array of segments of the uri of my application that would not include the subdirectory where my app resides, if I use such (I do in production, but not in the development env).
Previously I have used code that would check the first segment against a keyword, and if it matches (which means my base_url includes a subdirectory), the first segment gets ignored:

PHP Code:

$uri = current_url(true);
$segment_arr = [];
if ($uri->getTotalSegments() >= 1) {
   if (substr($uri->getSegment(1), 0, 7) == 'sistema') //the check for subdir
     $i = 2;
   else $i = 1;
   for ($i; $i <= $uri->getTotalSegments(); $i++) {
     $segment_arr[] = $uri->getSegment($i);
   }
} 


The resulting $segment_arr array includes the segment array.
It is cumbersome and depends on the name of the directory, which might change between projects, so I was looking for alternative. Was playing with this code:

PHP Code:

$uri = trim(uri_string(false),'/');
$segment_arr = (!empty($uri)) ? explode('/',$uri) : []; 


The resulting array includes all the segments, if there are any. Seems to be simple enough and works independent of the app subdirectory (which is ignored by the uri_string() function).
However, I wonder if there are any caveats to my new approach. Any ideas? Or maybe there is a better, codeigniter'ish, way of doing it?

}
     

==

Donatas G.

Why not use:

PHP Code:

$segments = $uri->getSegments(); 


Why not use:

PHP Code:

$segments = $uri->getSegments(); 


Well, because in case the url is https://mywebsite.com/appsubdir/firstseg/secondseg  it returns

Code:

Array
(
    [0] => appsubdir
    [1] => firstseg
    [2] => secondseg
)

while in my development environment, with url like http://localohost:8080/firstseg/secondseg (no app subdirectory)  it returns

Code:

Array
(
    [0] => firstseg
    [1] => secondseg
)

And I need a universal way, independent of the name of the app subdirectory or it's absence, to get the array:

Code:

Array
(
    [0] => firstseg
    [1] => secondseg
)

==

Donatas G.