7 uses of UNICODE_MULTIBYTE

drupal_strlen in drupal-7.x/includes/unicode.inc
Counts the number of characters in a UTF-8 string.
drupal_strtolower in drupal-7.x/includes/unicode.inc
Lowercase a UTF-8 string.
drupal_strtoupper in drupal-7.x/includes/unicode.inc
Uppercase a UTF-8 string.
drupal_substr in drupal-7.x/includes/unicode.inc
Cuts off a piece of a string based on character indices and counts.
UnicodeUnitTest::testMbStringUnicode in drupal-7.x/modules/simpletest/tests/unicode.test
Test full unicode features implemented using the mbstring extension.
unicode_requirements in drupal-7.x/includes/unicode.inc
Returns Unicode library status and errors.
_unicode_check in drupal-7.x/includes/unicode.inc
Perform checks about Unicode support in PHP, and set the right settings if needed.