Neos\Flow\Http\UriTemplate::expandMatch PHP Метод

    protected static function expandMatch(array $matches)
    {
        $parsed = self::parseExpression($matches[1]);
        $replacements = [];
        $prefix = $parsed['operator'];
        $separator = $parsed['operator'];
        $queryStringShouldBeUsed = false;
        switch ($parsed['operator']) {
            case '?':
                $separator = '&';
                $queryStringShouldBeUsed = true;
                break;
            case '#':
                $separator = ',';
                break;
            case '&':
            case ';':
                $queryStringShouldBeUsed = true;
                break;
            case '+':
            case '':
                $separator = ',';
                $prefix = '';
                break;
        }
        foreach ($parsed['values'] as $value) {
            if (!array_key_exists($value['value'], self::$variables) || self::$variables[$value['value']] === null) {
                continue;
            }
            $variable = self::$variables[$value['value']];
            $useQueryString = $queryStringShouldBeUsed;
            if (is_array($variable)) {
                $expanded = self::encodeArrayVariable($variable, $value, $parsed['operator'], $separator, $useQueryString);
            } else {
                if ($value['modifier'] === ':') {
                    $variable = substr($variable, 0, $value['position']);
                }
                $expanded = rawurlencode($variable);
                if ($parsed['operator'] === '+' || $parsed['operator'] === '#') {
                    $expanded = self::decodeReservedDelimiters($expanded);
                }
            }
            if ($useQueryString) {
                if ($expanded === '' && $separator !== '&') {
                    $expanded = $value['value'];
                } else {
                    $expanded = $value['value'] . '=' . $expanded;
                }
            }
            $replacements[] = $expanded;
        }
        $result = implode($separator, $replacements);
        if ($result !== '' && $prefix !== '') {
            return $prefix . $result;
        }
        return $result;
    }