<?php require __DIR__ . '/../vendor/autoload.php'; $languages = \voku\helper\ASCII::getAllLanguages(); $languagesKeyLengths = []; foreach ($languages as $language) { $langSpecific = \voku\helper\ASCII::charsArrayWithOneLanguage($language, false, false); $langSpecificKeyLength = \array_map('\mb_strlen', \array_keys($langSpecific)); if (count($langSpecificKeyLength) === 0) { $languagesKeyLengths[$language] = 0; } else { $languagesKeyLengths[$language] = \max($langSpecificKeyLength); } } //var_export($languagesKeyLengths);