--TEST-- Test mb_substitute_character() function : basic functionality --SKIPIF-- --FILE-- ===DONE=== --EXPECTF-- *** Testing mb_substitute_character() : basic functionality *** int(63) bool(true) int(66) bool(true) int(1234) bool(true) string(4) "none" Warning: mb_substitute_character(): Unknown character in %s on line %d bool(false) ===DONE===