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

    protected static function parseExpression($expression)
    {
        if (isset(self::$operators[$expression[0]])) {
            $operator = $expression[0];
            $expression = substr($expression, 1);
        } else {
            $operator = '';
        }
        $explodedExpression = explode(',', $expression);
        foreach ($explodedExpression as &$expressionPart) {
            $configuration = [];
            $expressionPart = trim($expressionPart);
            $colonPosition = strpos($expressionPart, ':');
            if ($colonPosition) {
                $configuration['value'] = substr($expressionPart, 0, $colonPosition);
                $configuration['modifier'] = ':';
                $configuration['position'] = (int) substr($expressionPart, $colonPosition + 1);
            } elseif (substr($expressionPart, -1) === '*') {
                $configuration['modifier'] = '*';
                $configuration['value'] = substr($expressionPart, 0, -1);
            } else {
                $configuration['value'] = (string) $expressionPart;
                $configuration['modifier'] = '';
            }
            $expressionPart = $configuration;
        }
        return ['operator' => $operator, 'values' => $explodedExpression];
    }