PHP clean function not working correctly - Stack Overflow

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Tue May 26 2020 07:40:01 GMT+0000 (Coordinated Universal Time)

Saved by @oropocket

static public function slugify($text)
{ 
  $text = str_replace(" ", "_", $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;
}
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https://stackoverflow.com/questions/3829776/php-clean-function-not-working-correctly