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"How do I add PHP variables to make a URL?"

I'm working on something at the moment and I'm using the "INCLUDE" tag to arrange a URL from three variable - "type", "id" & "format".

Here's the coding I've been trying to get to work:

if (file_exists("$type" + "$id" + "$format"))
{ include("$type" + "$id" + "$format"); $id++; }
else
{ include("nolink.html"); }
?>

the "nolink.html" bit works, which means that it hasn't assorted the URL how I want it. It should display a document as such:

news0001.html

You see "news" is the "type", "0001" is the "id" and ".html" is the "format". Clever, no! Except it doesn't work!

Also, I'm trying to increment the variable "$id", so that I can have other files below it. At the moment I'm using JavaScript style methods, which have worked for other tings, but not this. I'm also guessing that because the "$id" is an integer, that "%id" will have to be used, but I'll leave it up to you lot to tell me that.
Cheers!

You could use the float operator, but it's a bad way to do it. Glad it works.

Oh..

"foo" + "bar" will choke really horribly. "." to concatenate strings, "+" to concatenate floats (IE. to add up numbers). PHP is clever in spotting poeple's mistakes and correcting them, but I don't think it swaps +'s and .'s.

Yeah, better to use single digits :o)

It was the second one. I've got that increment thing sorted as well now! I had named the files 0001, 0002, 0003, etc. It gets mucked up that way, so I've changed them to 0, 1, 2, 3, etc

Cheers for your help!

... and was it the seconds bit of code that worked, or the first on I posted?

See if $id = $id + 1; works

cjh wrote:
> Probably completly wrong as well :o)

No you're wrong - it works! Cheers CJH, that worked a treat!

One more problem though - how do I increment the variable? My "$id++" methoddoesn't seem to be working. Any ideas?

Probably completly wrong as well :o)

You're not very good, are you? ;-p

Nope, things thats wrong again, try:

if (file_exists("$type$id$format")) {
include("$type$id$format");
$id++;
} else {
include("nolink.html");
}
?>

Sorry, as in:

if (file_exists("$type", "$id", "$format")) {
include("$type$id$format");
$id++;
} else {
include("nolink.html");
}
?>