[php] PHP memcached Fatal error: Class 'Memcache' not found

I've pasted the example from php.net for using memcached in php and I'm getting:

Fatal error: Class 'Memcache' not found

I have this in my php.ini:

[memcache]
memcache.hash_strategy = "consistent"
memcache.max_failover_attemps = 100
memcache.allow_failover = 1

Here's info from php -i and php -m respectively:

php -i | grep -i memcache
memcached
memcached support => enabled
libmemcached version => 0.37
Registered save handlers => files user sqlite memcached

php -m | grep -i memcache
memcached

So php seems to have loaded memcached as a module, and php info says that it is loaded and is using v .37. I have not tried yet via apache, I've only been using this through cli right now. Any thoughts?

I went into wp-config/ and deleted the object-cache.php and advanced-cache.php and it worked fine for me.

For OSX users:

Run the following command to install Memcached:

brew install memcached

The right is php_memcache.dll. In my case i was using lib compiled with vc9 instead of vc6 compiler. In apatche error logs i got something like:

PHP Startup: sqlanywhere: Unable to initialize module Module compiled with build ID=API20090626, TS,VC9 PHP compiled with build ID=API20090626, TS,VC6 These options need to match

Check if you have same log and try downloading different dll that are compiled with different compiler.

I found solution in this post: https://stackoverflow.com/questions/11883378/class-memcache-not-found-php#=

I found the working dll files for PHP 5.4.4

I don't knowhow stable they are but they work for sure. Credits goes to this link.

http://x32.elijst.nl/php_memcache-5.4-nts-vc9-x86.zip

http://x32.elijst.nl/php_memcache-5.4-vc9-x86.zip

It is the 2.2.5.0 version, I noticed after compiling it (for PHP 5.4.4).

Please note that it is not 2.2.6 but works. I also mirrored them in my own FTP. Mirror links:

http://mustafabugra.com/resim/php_memcache-5.4-vc9-x86.zip http://mustafabugra.com/resim/php_memcache-5.4-nts-vc9-x86.zip

Dispite what the accepted answer says in the comments, the correct way to install 'Memcache' is:

sudo apt-get install php5-memcache

NOTE Memcache & Memcached are two distinct although related pieces of software, that are often confused.

EDIT As this is now an old post I thought it worth mentioning that you should replace php5 with your php version number.