[Drupal 5] PHP Ereg function causes Drupal site to crash
BY naveen.pl
6 years ago
0 comments comment

We had recently faced an issue in one of our client's website running on Drupal 5. The site had crashed and we were unable to continue development. We began analyzing the problem by checking the free space on the site and came to the conclusion that the now deprecated PHP Ereg function was causing the site to crash. If you are facing the same issue in one of your Drupal sites, read on to know how we successfully fixed the bug.

First let us explain how we found the bug. We began by checking the free space on the website and found that more than 50% space was still available. Then we checked the database and we found that the watchdog table had become corrupted. We truncated the table and it actually started working!

We may not have actually gone for truncating the table, since it was a watchdog table. But the issue was due to the corrupted table. We also realized that a few pages that were working, no longer worked. They were all showing WSOD and we found around 20 pages of warning messages recorded in a short duration of time. Interestingly, they were all generated around a PHP ereg function.

elseif ($depth >= $min_depth && ereg($mask, $file)) {

We have also noticed that the server was upgraded recently from 5.1 to 5.3. Then we had a look into the PHP manual for ereg and noticed the following warning about function.

"This function has been DEPRECATED as of PHP 5.3.0. Relying on this feature is highly discouraged."

We realized that the solution to this problem was to replace it with preg_match which is somewhat similar to ereg and supported by PHP. Here is how we did it.

example code

// Original code
elseif ($depth >= $min_depth && ereg($mask, $file)) {
// Replaced code.
elseif ($depth >= $min_depth && mb_ereg($mask, $file)) {

// Original code
if(!ereg("^[A-Za-z0-9\-|_]*$", $name))
// Replaced code.
if(!preg_match("/[^A-z0-9_\-]/", $name))

This fixed the issue caused by ereg function which is deprecated after php 5.3. Hope this article was helpful to you too.



on 01st January 2008 / by webmaster
We have added a few new modules to our site recently. Drupal Technical StumbleThis Leave a reply Your email address will not be published. Required fields are marked * Sean (not verified) access_time 24 May 2020 - 03:56 Hi there, I uploaded the files, enabled the modules to use SU, and now I see the link, but there is no icon... How can I fix this? Thanks, Sean webmaster access_time 24 May 2020 - 03:56 In reply to Icon doesn't show by Sean (not verified) What do you see when you view the source? Search for stumblethis_button and you should be able to see the code for the image and the URL. Then you should be able to troubleshoot from there. Juicy Couture Addict (not verified) access_time 24 May 2020 - 03:56 thanks for the post. would love to hear more of you. by the way, drupal's really popular nowadays as it has easy and fast features. you agree with me? thanks. Add new comment

on 16th January 2008 / by webmaster
Most webmasters do not realize this, but a lot of the content on lot of websites can be accessed from multiple URLs. A simple example would be where www.example.com and example.com leads to the same page. This is a fatal mistake in Search Engine Optimization and search engines penalize you for duplicate content. The correct configuration would be where the above two urls will lead you to the same page but example.com will redirect you to www.example.com with a 301 (Moved permanently) status which will not result in search engines penalizing the page. It is very easy to configure 301 redirects using Apache .htaccess file and the process is the same for a Drupal installation also. Drupal Technical Apache htaccess SEO Leave a reply Your email address will not be published. Required fields are marked * Anonymous (not verified) access_time 24 May 2020 - 03:56 Hello. I'm trying to make example.com show as www.example.com, and I'm running into difficulties. I'm on Apache 2.0 and using the following lines in my httpd.conf file: RewriteEngine on RewriteCond %{HTTP_HOST} ^xxxxxxxxxx\.com$ [NC] RewriteRule ^(.*)$ http://www.xxxxxxxxxx.com/$1 [L,R=301] When I go to http://xxxxxxxxxx.com, I get http://www.xxxxxxxxxx.com (as expected). However, when I go to http://xxxxxxxxxx.com/node/1 (it's a Drupal site), I get a 404 thrown and the URL changes to xxxxxxxxxx.com/var/www/drupal/node/1. Same thing with www.xxxxxxxxxx.com/node/1. Any suggestions? I want to run without Drupal's .htaccess file (instead incorporating these calls into my httpd.conf file). webmaster access_time 24 May 2020 - 03:56 In reply to Rewrite including filesystem path by Anonymous (not verified) I think the problem is with the base path which results in the redirection to /var/www/ part. The best approach I would think is to start with drupal htaccess and then strip out parts and move to httpd SNVC (not verified) access_time 24 May 2020 - 03:56 This is definitely a good guide. Thanks for this. wellyson access_time 24 May 2020 - 03:56 This is really nice and helpful. Add new comment

on 08th February 2008 / by webmaster
Attachment Size slashdotit.tar.gz 173.55 KB Similar to the StumbleThis module that we had created earlier we have created another bookmarking Drupal Technical Slashdotit Leave a reply Your email address will not be published. Required fields are marked * Shlomi Fish (not verified) access_time 24 May 2020 - 03:56 Hi! I'm interested in this module, but Drupal 6.2 complains that it's incompatible with it. Can you please update it or tell me how? Regards, Shlomi Fish shlomifish.org webmaster access_time 24 May 2020 - 03:56 In reply to Can you update it for Drupal-6.x? by Shlomi Fish (not verified) Sure we are working on this currently and will post an update soon. Also we will post this module on www.drupal.org as well Cheers Anoop John Team Zyxware Anonymous (not verified) access_time 24 May 2020 - 03:56 Hello! Nice Article very interesting, thanks Add new comment
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