Slugify a string - javascript and php

slugify.js

/**
 * Slugify a string
 * @param {String} text
 * @return {String}
 */
export function slugify(text) {
  return text.toString().toLowerCase()
    .replace(/([å,ä])/g, 'a')       // Replace å and ä with aa
    .replace(/(ö)/g, 'o')           // Replace ö with o 
    .replace(/\s+/g, '-')           // Replace spaces with -
    .replace(/[^\w\-]+/g, '')       // Remove all non-word chars
    .replace(/\-\-+/g, '-')         // Replace multiple - with single -
    .replace(/^-+/, '')             // Trim - from start of text
    .replace(/-+$/, '');            // Trim - from end of text
}

slugify.php

<?php

/**
 * Slugify a string
 * @param  [type] $text
 * @return [type]
 */
function slugify ($text) {
  // replace å, ä with a
  $text = str_replace(array('å', 'ä'), 'a', $text);

  // replace ö with o
  $text = str_replace('ö', 'o', $text);

  // replace non letter or digits by -
  $text = preg_replace('~[^\\pL\d]+~u', '-', $text);

  // trim
  $text = trim($text, '-');

  // transliterate
  $text = iconv('utf-8', 'us-ascii//TRANSLIT', $text);

  // lowercase
  $text = strtolower($text);

  // remove unwanted characters
  $text = preg_replace('~[^-\w]+~', '', $text);

  if (empty($text)) {
    return 'n-a';
  }

  return $text;
}