How to combine Regex with removing space and # character

idm :

I have this array, that I need to remove white spaces and # hashtag character:

array (size=7)
  0 => string 'darwin' (length=6)
  1 => string ' #nature' (length=8)
  2 => string ' explore' (length=8)
  3 => string ' galapagos' (length=10)
  4 => string 'karma' (length=5)

  foreach ($feedSinglePosts["hashtags_list"] as $key=>&$item) {
     $item = preg_replace('/(\s|^)/', '', $item);
     $item = preg_replace('/\#+/', '', $item);
  }

The Regex above works well but I want to make it one line if possible. When I do: /(\s|^)\#+/ it outputs this:

array (size=7)
  0 => string 'darwin' (length=6)
  1 => string 'nature' (length=6)
  2 => string ' explore' (length=8)
  3 => string ' galapagos' (length=10)
  4 => string 'karma' (length=5)

How to make the regex on liner that removes white spaces and3 hashtag.

AbraCadaver :

It appears that the characters will be at the beginning or end. If so then no need for loops or regex:

array_walk($feedSinglePosts["hashtags_list"], function(&$v) { $v = trim($v, "\n\r #"); });

If you need to remove them anywhere:

$feedSinglePosts["hashtags_list"] = str_replace(["\n","\r"," ","#"], "", $feedSinglePosts["hashtags_list"]);