Misc::change_encoding( string $data, string $input, string $output ): string|boolean

282    public static function change_encoding($data, $input, $output)283    {284        $input = Misc::encoding($input);285        $output = Misc::encoding($output);286 287        // We fail to fail on non US-ASCII bytes288        if ($input === 'US-ASCII') {289            static $non_ascii_octects = '';290            if (!$non_ascii_octects) {291                for ($i = 0x80; $i <= 0xFF; $i++) {292                    $non_ascii_octects .= chr($i);293                }294            }295            $data = substr($data, 0, strcspn($data, $non_ascii_octects));296        }297 298        // This is first, as behaviour of this is completely predictable299        if ($input === 'windows-1252' && $output === 'UTF-8') {300            return Misc::windows_1252_to_utf8($data);301        }302        // This is second, as behaviour of this varies only with PHP version (the middle part of this expression checks the encoding is supported).303        elseif (function_exists('mb_convert_encoding') && ($return = Misc::change_encoding_mbstring($data, $input, $output))) {304            return $return;305        }306        // This is third, as behaviour of this varies with OS userland and PHP version307        elseif (function_exists('iconv') && ($return = Misc::change_encoding_iconv($data, $input, $output))) {308            return $return;309        }310        // This is last, as behaviour of this varies with OS userland and PHP version311        elseif (class_exists('\UConverter') && ($return = Misc::change_encoding_uconverter($data, $input, $output))) {312            return $return;313        }314 315        // If we can't do anything, just fail316        return false;317    }