public function getToReplace(array $ignoreSymbols): array
    {
        if( empty($ignoreSymbols) )
            return $this->toReplace;

        return array_diff($this->toReplace, $ignoreSymbols);
    }
public function getToReplace(array $ignoreSymbols): array
    {
        if( empty($ignoreSymbols) )
            return $this->toReplace;

        return array_diff($this->toReplace, $ignoreSymbols);
    }
public function getToReplace ( array $ ignoreSymbols ) : array { if ( empty ( $ ignoreSymbols ) ) return $ this -> toReplace ; return array_diff ( $ this -> toReplace , $ ignoreSymbols ) ; }
Get replaceable symbols

@param array $ignoreSymbols
@return array
Get replaceable symbols