1

I have a server with centos 6.3 and cPanel

After the upgrade from php 5.3.16 to php 5.3.19 my site stopped working. When I try to execute an index.php manually, I'm receiving the following error.

php: symbol lookup error: /usr/local/lib/php/extensions/no-debug-non-zts-20090626/memcached.so: undefined symbol: memcached_last_error_errno

Reinstalled memcached and memcache via pecl and manually but that did not help.

What is causing this problem and how do I fix it ?

1

Memcached 2.x extension in PHP requires a newer version of libmemcached.

So you need to make sure you remove the old one from the system:

yum remove libmemcached

Be sure it removed libmemcached.so.2* from your system.

Download & compile newer libmemcached from https://launchpad.net/libmemcached/+download (for me libmemcached-1.0.13 compiles fine on Centos 6.3)

Recompile memcached extension by issuing:

pecl install -f memcached

Now it should be fine. For me it was.

0

Check for the "extension=memcached.so" extension entry in new php.ini file. Make sure it is there.

Now run "updatedb && locate memcached.so" to find this module and copy it to /usr/local/lib/php/extensions/no-debug-non-zts-20090626/ location.

  • His issue isn't about PHP not being able to find the extension; there are symbols that are not resolving in the SO file, presumably because he's got an old memcache library than what is required from the PHP extension. – Michael Dec 17 '12 at 12:59

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.