public static function Unicode::caseFlip

Flip U+C0-U+DE to U+E0-U+FD and back. Can be used as preg_replace callback.

Parameters

array $matches: An array of matches by preg_replace_callback().

Return value

string The flipped text.

File

drupal/core/lib/Drupal/Component/Utility/Unicode.php, line 574

Contains \Drupal\Component\Utility\Unicode.

Class

Unicode

Provides Unicode-related conversions and operations.

Namespace

Code

public static function caseFlip($matches) {
  return $matches[0][0] . chr(ord($matches[0][1]) ^ 32);
}