Concatenate a Variable?

[brotherhood of LAN]

Say I wanted to use a URI as a variable.... say /111.htm

Can I concatenate that to 111 on its own?

The variable can then be used in a mysql query to match a primary key...

[jatar_k]

do you mean cut it?

I don't know if I understand what you are asking BOL.

url like /111.htm read the num out of it "111" and then use that num to make a DB call?

If so, yes, no problem.

[brotherhood of LAN]

yeah, the idea being just to request the URL and concatenate it to match the primary key...its for that directory.

Any chance you can squeeze in the code? :)

[jatar_k]

maybe something like this?

<?
$string = "http://www.something.com/dir1/111.htm";
$pattern = '^.*/([^\./]*)\..{3,4}$';
eregi($pattern, $string, $vars);
echo $vars[1];
?>

[brotherhood of LAN]

heh, bang on as usual....thanks chief.

With this sorted I can do that word id thing, hopefully post the results when i finish :)

[andreasfriedrich]

Since Perl is a lot nicer than PHP we need to use at least Perl-Compatible regular expressions in PHP ;)

preg_match("'/(\d+)\.([a-z]{3,4})$'i", $url, $matches); 
$number = $matches[0];

Andreas

[brotherhood of LAN]

$string = "$REQUEST_URI";
$pattern = '^.*/([^\./]*)\..{3,4}$';
eregi($pattern, $string, $vars);
echo $vars[1];

Ok, just to go a step further on this, I'm using apache and have heard the wonders of mod_rewrite, and I wonder if it can be used here for some neato reason ;)

The URL used above will be a plain old number, no query string...just grabbing the number of the file. This number will match a word in a db.....is there a surefire way of converting the number into the word related to it in the db? I think mod_rewrite is the answer here, I'm new to apache and wouldnt know where to start apart from inklings from old threads.

[ergophobe]

need to use at least Perl-Compatible regular expressions in PHP

More importantly, the PCRE are actually faster than the POSIX-based regex in PHP, even though it seems counter-intuitive.

The speed gain is not huge, but it's a simple 1-for-1 change that *does* give you an efficiency gain.

Tom

[brotherhood of LAN]

When trying what andreas suggests I get back the same value as I would using $REQUEST_URI, ie with / and .htm included.

This leaves me a bit confused, if Andreas' method is more efficient then how do I get it to do what jatars code done for me first time off ....if anyone knows, I'd be thankful for covering up my ignorance of PHP :)

/added that was with replacing $url, with $request_uri.......seems efficiency is the least of my probs before i get to understand the code better

[andreasfriedrich]

Sorry, the number is contained in $matches[1].

$matches[0] will contain the text that matched the full pattern, $matches[1] will have the text that matched the first captured parenthesized subpattern, and so on.

preg_match [php.net]

$url = "http://www.something.com/dir1/111.htm";  
preg_match("'/(\d+)\.[a-z]{3,4}$'i", $url, $matches); 
$number = $matches[1];

Andreas

[brotherhood of LAN]

Thanks :)

[Birdman]

Hello WW,

I too need the same sort of effect. I'm using an include for my navigation with a call to a db so I can change my menu site wite at once(I love this php/mysql stuff).

Now I'd like to go a step further, and run an if/else on the results so I can match the current page and deactivate the link to the current page.

I'm using this to get the url:

$filelocation=$HTTP_HOST.$PHP_SELF;
echo($filelocation);

What I get from that is:

www.my_site.com/the_page I'm_on.html

I need to cut the actual filename off of the url or is there a way to call for the filename itself?

Thanks

[brotherhood of LAN]

If your looking for ALL of the path after the domain, you can use $REQUEST_URI

I know there is one for the file on its own, just cant find it...no doubt someone else will post it.

You might also want to use parse_url, which breaks up a URL into fragments. You could use all the fragments of the URL after the host.

[Birdman]

Thanks BoL! I'll try that and search for 'requesting the filename' command
:)

[jatar_k]

$filename = current(explode('.', basename($SCRIPT_NAME)));

I found this on this page
[php.net...]

[andreasfriedrich]

Adamīs code will give you the_page_I'm_on.

If you donīt want the extension stripped off use:

substr($_SERVER[REQUEST_URI], strrpos($_SERVER[REQUEST_URI], '/')+1);

This will give you the_page_I'm_on.html.

Andreas