are you seven?

..

This is fucking stupid.

Agreed... this is a really boring kata. Bottom 2% probably

PHP setup is wrong.. doesn't have a dollar sign for arguments, very confusing to newbies

stop spamming... just announce it all at once

There's nothing really clever about it, and you can't really even say it's best practice (at least anymore) since it uses ES5... there's nothing wrong with it not escaping special chars tho since it's word matching, not just string matching

Make sure you're not modifying the original input.

Sorting order makes no difference.

this is bad.

Most of the tests were invalidated due to the function's name changing it seems

Idc how old that kata is (2013), how is it ranked 7kyu?

Do you only speak when asked for an opinion? Judging from the comment above, clearly not.