More regex expression help

john1704

Hi,

I have made a regex expression to get the full address and the directories following it. Here is the code:

$host = preg_replace('/http:\/\/www.[a-z]+\.(net|com|org|info|)\/([a-z]+\/[a-z]+\/[a-z]+\/[a-z]+\/[a-z]+\/[a-z]+\/[a-z]+\/[a-z]+\/|[a-z]+\/[a-z]+\/[a-z]+\/[a-z]+\/[a-z]+\/[a-z]+\/[a-z]+\/|[a-z]+\/[a-z]+\/[a-z]+\/[a-z]+\/[a-z]+\/[a-z]+\/|[a-z]+\/[a-z]+\/[a-z]+\/[a-z]+\/[a-z]+\/|[a-z]+\/[a-z]+\/[a-z]+\/[a-z]+\/|[a-z]+\/[a-z]+\/[a-z]+\/|[a-z]\/[a-z]+\/|[a-z]+\/)/', "http://www.johninteractive.net/proxy/proxyimage.php?url=$0", $url);

Let's assume that $url is "http://www.johninteractive.net/experiments/proxytest.html"

The program I'm using is called RegexBuddy, and it says that using this regex should only match "http://www.johninteractive.net/experiments/".

But when I run it, it only returns the full URL. How do I get it so that it cuts off the proxytext.html" part?

Thanks.

sneakyimp

I can't see the value in $host - for some reason this forum is rendering it on a second line with no scroll bar.

I think the basic idea though is that you need to add a 'start of subject' assertion (⁾ to the beginning of your pattern and an 'end of subject' ($) pattern to the end. More info can be found in the manual.

john1704

Still ends up the same way.

Instead of:

http://www.johninteractive.net/experiments/picture.jpg

It ends up like:

http://www.johninteractive.net/experiments/proxyimage.html/picture.jpg

Code:

$host = preg_replace('/^http:\/\/www.[a-z]+\.(net|com|org|info|)\/([a-z]+\/[a-z]+\/[a-z]+\/[a-z]+\/[a-z]+\/[a-z]+\/[a-z]+\/[a-z]+\/|[a-z]+\/[a-z]+\/[a-z]+\/[a-z]+\/[a-z]+\/[a-z]+\/[a-z]+\/|[a-z]+\/[a-z]+\/[a-z]+\/[a-z]+\/[a-z]+\/[a-z]+\/|[a-z]+\/[a-z]+\/[a-z]+\/[a-z]+\/[a-z]+\/|[a-z]+\/[a-z]+\/[a-z]+\/[a-z]+\/|[a-z]+\/[a-z]+\/[a-z]+\/|[a-z]\/[a-z]+\/|[a-z]+\/)$/', "$0", $url);

bpat1434

For us to help you, can you tell us what you're populating $url with?

Also, if you only want to match a certain directory, there's an easier way:

<?php

$host = preg_replace('/http:\/\/www.johninteractive\.net\/experiments\/(.*?)/', "http://www.johninteractive.net/proxy/proxyimage.php?url=$0", $url); 

// Added a bunch of lines for sneakyimp's sake ;)
?>

But without actually knowing what you're putting in, and what you expect out, this is just a shot in the dark.