using filemtime on an absolute URL?

[Erica]

Hey,

I need a function to obtain the "last modified" timestamp from a file.
filemtime works perfectly well when I am working with a file on my
server. However, sometimes I need to pass it a full URL from a
different domain. Is there a way of doing this? I can't get it to
work...

Thanks!!
--Erica

[Daniel Tryba]

Re: using filemtime on an absolute URL?

Erica <erica@technody ke.com> wrote:[color=blue]
> I need a function to obtain the "last modified" timestamp from a file.
> filemtime works perfectly well when I am working with a file on my
> server. However, sometimes I need to pass it a full URL from a
> different domain. Is there a way of doing this? I can't get it to
> work...[/color]

If with URL you mean a http request, you could write a function to do a
HEAD request for that URL and scan the returning http headers for a
Last-Modified header (which is optional). There might be other usefull
headers like Expires, depending on your needs.

--

Daniel Tryba

[Chung Leong]

Re: using filemtime on an absolute URL?

"Erica" <erica@technody ke.com> wrote in message
news:346a55df.0 408171551.293d2 f4e@posting.goo gle.com...[color=blue]
> Hey,
>
> I need a function to obtain the "last modified" timestamp from a file.
> filemtime works perfectly well when I am working with a file on my
> server. However, sometimes I need to pass it a full URL from a
> different domain. Is there a way of doing this? I can't get it to
> work...
>
> Thanks!!
> --Erica[/color]

You need to open the URL first with fopen(), then call
stream_get_meta _data() to retrieve its meta data. The 'Last-Modified' header
is what you need. Example:

$f = fopen("http://www.google.com/images/logo_sm.gif", "rb");
print_r(stream_ get_meta_data($ f));
fclose($f);

(Yup, the Google logo hasn't changed in a while)