preg_match() doesn't work on host

Abhishek Reddy posted this at 13:10 — 18th July 2004.

Joined: Jul 2001

<?php
$pattern = \"/BEGIN_OS ([0-9]+)\n((.|\n)+)END_OS/\"; // specialised pattern for OS section
preg_match($pattern, $logfile, $os_section); // find section
?>

I'm using that code to match a section of a file that looks like this:

BEGIN_OS 5
Unknown 90
linux 3787
win98 15
winxp 94
win2000 24
END_OS

The problem is, there is no problem. It works perfectly on my localhost. I've even built the rest of the script and page. However, when I run it on my remote host account, it doesn't work. No error messages or anything -- nothing is returned; a blank page or no page at all. I cannot for the life of me figure out why.

I know it's connected to that bit of code because I commented out those lines and things seem to load.

I looked in the PHP error logs and found nothing.

I tried testing preg_match() in other conditions and that works...

I'm running Apache 2.0.50/PHP 5.0.0 on my box, host runs Apache 1.3.31/PHP 4.3.8. I searched for documentation on differences in regex handling for these versions without luck.

Is my regex bad? Anybody experienced this before? Any ideas?

:confused:

Abhishek Reddy posted this at 13:46 — 18th July 2004.

He has: 3,348 posts

Joined: Jul 2001

Solved.

I used:

<?php
$pattern = \"/BEGIN_OS ([0-9]+)\n(.+)END_OS/s\"; // specialised pattern for OS section
?>

The /s modifier included newlines for . so I didn't need (.|\n), which seemed to be the problem part anyhow. I'd still like to know why it worked on my server...