Error when insert a new discussion

[tosix]

Hello to all,

from now on my forum version 3.8.4 patch level 2 occurred an error when you insert a new discussion.

Warning: preg_replace () [function.preg-replace]: Compilation failed: lookbehind assertion is not fixed length at offset 176 in [path] / includes / functions_newpost.php on line 246

The code has not been touched for months, what can I do?

[Trevor Hannant]

That's an issue with your server - you need to speak to your host about this

[tosix]

Hi Trevor,

thank you for the reply. I contacted the hosting and tell me that everything is functioning regularly and contact VBulletin.
I think the problem is derived by the update to version 8.21 of PCRE.
Is there a way to solve this problem, because the hosting can't downgrade to version 8.20.

[BirdOPrey5]

What version of PHP are you using?

[tosix]

The version of PHP is 5.2.17

Today i update at the last version can I download 3.8.6 Patch level 1, but the problem is the same.

Warning: preg_replace() [function.preg-replace]: Compilation failed: lookbehind assertion is not fixed length at offset 255 in [path]/includes/functions_newpost.php on line 260

For the moment I bypassed the problem commenting preg_replace () and assigning $text = $messagetext;

The problem is posting a new discussion, responding to a thread and sending a private message. The BBcode for the links area ON . If switch to OFF there is no problem obviously because it's bypassed.

[BirdOPrey5]

The code in question looks like it is used to turn e-mail addresses into links, usually not an often used feature.

[tosix]

The code that turn e-mail addresses into links works fine. The problem is genereting by the previous preg_replace() that turn url in links. Any ideas? Thanks for your support

[BirdOPrey5]

This is a shot in the dark but try changing lines 227 - 229 in the file functions_newpost.php

from:

        $urlSearchArray = array(            '#(^|(?<=[^_a-z0-9-=\]"\'/@]|(?<=' . $taglist . ')\]))((https?|ftp|gopher|news|telnet)://|www\.)((\[(?!/)|[^\s[^$`"{}<>])+)(?!\[/url|\[/img)(?=[,.!\')]*(\)\s|\)$|[\s[]|$))#siU'        

); 

to:

        $urlSearchArray = array();

            $urlSearchArray[] = '#(^|(?<=[^_a-z0-9-=\]"\'/@]|(?<=' . $taglist . ')\]))((https?|ftp|gopher|news|telnet)://|www\.)((\[(?!/)|[^\s[^$`"{}<>])+)(?!\[/url|\[/img)(?=[,.!\')]*(\)\s|\)$|[\s[]|$))#siU'; 

Save the original first in case this doesn't work.

[tosix]

In my file this lines are 241 - 243 .

I tried to change these lines, but still the same error

[BirdOPrey5]

That's weird, I l was looking at the 3.8.4 PL2 files.

I was afraid of the same error- What I gave you was a line they used (more or less) in VB4, thinking maybe they had something that would prevent the error- but it seems not. In my Google research I see that the PCRE library has had it share of bugs over the years, some come to light only with specific versions of PHP. In all cases I saw people solved it by either downgrading the PCRE library or changing their PHP version.

[beansbaxter]

I'm running php 5.2.17 with vBulletin 3.8.7 and I am experiencing this same issue. How can I resolve this?

[BirdOPrey5]

The only solution at this time is to downgrade back to PCRE 8.20. This has been logged as a bug in 8.21.