vendor/luyadev/yii-helpers/Inflector.php

ve starších verzích: vendor/luyadev/luya-core/helpers/Inflector.php

//$string = preg_replace('/[`%\+=\{\}\|\\\.<>\/\_]+/u', '', $string); // replace those chars with nothing
$string = preg_replace('/[`%\+=\{\}\|\\<>\/\_]+/u', '', $string); // replace those chars with nothing