Failed to load mod_mem_cache.so

I am trying to load mod_mem_cache.so in SUSE Linux Enterprise Server 11, by doing LoadModule memcache /path/to/mem_cache.so.

But I got this:

httpd2: Syntax error on line 113 of /etc/apache2/httpd.conf: Syntax error on line 43 of /etc/apache2/sysconfig.d/loadmodule.conf: Can't locate API module structure `memcache' in file /usr/lib/php5/extensions/memcache.so: /usr/lib/php5/extensions/memcache.so: undefined symbol: memc开发者_Python百科ache

This memcached is installed using Zypper, through our repository.

How can I fix this?

Memcache is not a Apache extension, it is a PHP one. You will need to edit your PHP configuration to include the line:

extension memcache.so

From the looks of that error message, the extension is already in the default extensions directory, but if not, alter the extension_dir setting to read:

extension_dir = "/usr/lib/php5/extensions"

Then restart Apache, and check your PHPinfo.