Segmentation fault with the PHP SDK

I just tried to install the PHP SDK on my Ubuntu 14.04.
I started with the C SDK, then isntalled the PHP SDK with pecl.
Every works fine, i got no errors, a couchbase.so is installed in /usr/lib/php55/…

But when i add a
extension=couchbase.so to my php.ini everything broke, i can’t display any php page.

I checked the logs and see:

[Wed Jan 20 11:36:39.872396 2016] [core:notice] [pid 4265] AH00052: child pid 4298 exit signal Segmentation fault (11)

Looks bad uh ?

Any tips to make this works?

@brett19 or @mnunberg might be able to help you on that one.

To debug a segfault, you will need to get a stack trace at the very least: https://bugs.php.net/bugs-generating-backtrace.php