Memcached Best Module: Memcached or Memcache Pecl?

I use this one:

Code:

Installed Packages
Name        : php-pecl-memcached
Arch        : x86_64
Version     : 3.0.0
Release     : 0.1.20160217git6ace07d.el7.remi.7.0
Size        : 244 k
Repo        : installed
From repo   : remi-php70
Summary     : Extension to work with the Memcached caching daemon
URL         : http://pecl.php.net/package/memcached
License     : PHP
Description : This extension uses libmemcached library to provide API for communicating
            : with memcached servers.
            :
            : memcached is a high-performance, distributed memory object caching system,
            : generic in nature, but intended for use in speeding up dynamic web
            : applications by alleviating database load.
            :
            : It also provides a session handler (memcached).
            :
            : Package built for PHP 7.0.

 

I installed it from the Remi Repo.

 

Remi uses the php-memcached, that one is php-memcache. Two different extensions.

 

On one of the forums I admin, I recently upgraded the server to PHP7 and now seeing a lot of these errors:

XF 1.4 - Registration problem. "The field 'xxxxxxxx' was not recognised." | XenForo Community

Thanks to @RoldanLT for debugging that it's most likely a memcache issue.

Currently I have the following for the xenforo config.php on that site:

Code:

$config['cache']['enabled'] = true;
$config['cache']['frontend'] = 'Core';
$config['cache']['cacheSessions'] = true;
$config['cache']['frontendOptions'] = array(
        'caching' => true,
        'cache_id_prefix' => 'mvc_xf_',
        'automatic_serialization' => true,
        'lifetime' => 0
      );

$config['cache']['backend'] = 'Libmemcached';
$config['cache']['backendOptions'] = array(
        'servers' => array(
            array(
                'host' => '127.0.0.1',
                'port' => 11211,
                'persistent' => 'true',
                'weight' => 1
            )
        )
  );

@RoldanLT what memcache PHP library are you using on your PHP 7 box?

@eva2000 should I switch to using memcached rather than libmemcached since this is a PHP7 box? I saw your note above about memcached being based on libmemcached, not sure though if that means I need to use memcached rather than libmemcached or not.