https://api.drupal.org/api/drupal/core%21lib%21Drupal%21Component%21Utility%21Unicode.php/function/Unicode%3A%3Aucwords/10
function Unicode::ucwords | Drupal API
functionunicodedrupalapi
https://bugs.php.net/bug.php?id=17517&edit=2
PHP :: Bug #17517 :: ucwords() returns false when it should return ''
phpbugreturnsfalse
https://bugs.php.net/bug.php?id=21708
PHP :: Bug #21708 :: ucwords() trouble again
phpbugtrouble