Your friend is trying to write a function that removes all vowels from a string. They write:

function removeVowels($str) {
  return preg_replace("/aeiou/", "", $str);
}

However, it seems that it doesn't work? Fix your friend's code so that it actually does remove all vowels.

Examples

// Current code:
removeVowels("hello") ➞ "hello"

// What we want:
removeVowels("hello") ➞ "hll"

Notes

All letters will be lowercase.