I have installed drupal on my localhost. It worked well 2 months ago, but now something happened and I don't know why. I'll be very grateful if you can help me. Thanks in advance.

The full error looks like this:

> 
> Fatal error: Class 'Memcache' not
>  found in
>  /srv/www/htdocs/modules/memcache/dmemcache.inc
>  on line 177
> 
> 
> 

1) php -m gives this:

> 
> [PHP Modules]  
> 
>  bz2  
> 
>  ctype  
> 
>  date  
> 
>  dom  
> 
>  filter  
> 
>  gd  
> 
>  hash  
> 
>  iconv  
> 
>  json  
> 
>  libxml  
> 
>  mbstring  
> 
>  mcrypt  
> 
>  mysql  
> 
>  mysqli  
> 
>  pcre  
> 
>  PDO  
> 
>  pdo\_mysql  
> 
>  pdo\_sqlite  
> 
>  Reflection session SimpleXML SPL
>  SQLite standard sysvsem tokenizer xml
>  xmlreader xmlwriter zip zlib
> 
> 
> [Zend Modules]
>  none
> 
> 
> 

2) memcached is installed through package manager.

3) memcache module for drupal installed

what am I doing wrong? thx.