Re: XPath expressions that return scalar value

From:	Christian Stocker	Date:	Thu, 23 Sep 2004 20:04:03 +0000
Subject:	Re: XPath expressions that return scalar value
References:	1	Groups:	php.xml.dev
Request:	Send a blank email to php-xml-dev+get-462@lists.php.net to get a copy of this message

Hi On 23.9.2004 22:01 Uhr, Jirka Kosek wrote:

Hi, DOMXPath->query() method according to documentation returns DOMNodeList() object. But how can I access result of expression that returns just string, number or boolean? E.g. DOMXPath->query("count(//*)") will return empty node-set from PHP point of view. Do you plan to add new method, say evaluate, that will be able to return scalar types? Something like:

We had this discussion already and Yes, it is planned for 5.1. chregu

echo "Total number of element in document: " . $xpath->evaluate("count(//*)"); echo "Title of the first chapter: " . $xpath->evaluate("string(//chapter[1])"); Without such method XPath API in PHP is very limited compared to other XPath API in languages like Java or .NET.
                    Jirka