Thanks for your help. but this query will probably select "abcfooxyz" as well when "foo" is supplied. (untested), although it will definitely select "foo" in "foo bar" (tested)

$xpath->query("//div[contains(@class, '" . $class . "')]") 

How can we be more specific? 

@URL: Actually I am maintaining the module feedapi imagegrabber, which downloads images from external websites. Now sometimes the url I parse has spaces, so I am unable to decide whether or not  to percentage encode the URL, because percentage encoding will make this URL valid but will break the following URL:
http://www.google.com/search?q=hello
by converting it to 
http://www.google.com/search?q%3Dhello

Looking forward.

--
Regards,
Nitin Kumar Gupta
http://publicmind.in/blog/


On Sat, Oct 3, 2009 at 1:30 AM, Domenic Santangelo <domenic@workhabit.com> wrote:
>
> nitin gupta wrote:
>
> for eg <div class="foo"></div> is selected by the following query.
> $class = "foo";
> $xpath->query("//*[@class = '".$class."']");
> But, this fails in case of multiple classes, i.e. does not select this :
> <div class="foo bar"> </div>
>
> The "contains" function would probably work, eg (untested):
> $xpath->query("//div[contains(@class, '" . $class . "')]");
>
> One more question: is this url valid : http://xyz.com/path with space.html
>
> Nope. You can escape the url if you just HAVE to have spaces:
>
> http://n00b.com/path%20with%20space.html
>
> but why not use dashes?
>
> http://pro.com/path-with-properly-indexed-spaces.html
>
> -Dom