Unable to load memcache.so extension

Question

I built PHP from source with configure command

'./configure' '--prefix=/usr/local/php-5.2.8' '--with-config-file-path=/etc --with-config-file-scan-dir=/etc/php.d' '--with-apxs2=/usr/local/httpd/bin/apxs' '--with-mysql=/usr/local/mysql/' '--with-zlib' 

I installed php memcache extension :

wget http://pecl.php.net/get/memcache
tar -zxvf memcache-2.2.5.tgz
cd memcache-2.2.5
phpize
./configure --enable-memcache
make
make install

I add to my /usr/local/lib/php.in

extension=memcache.so

Rebooted my apache and run php-m but php seem doesn't load memcache extension I followed this solution from this site http://www.howtoforge.com/forums/showthread.php?t=26554

I added full path

extension=/usr/local/lib/php/extensions/no-debug-non-zts-20060613/memcache.so 

rebooted apache But it didn't load memcache extension ! I google around but the same issue ! How can I load this extension _ _"

Answer 1

Firstly run your php binary like

php -v

It should complain that your php.ini wants to load modules that cant be loaded...

If it doesnt complain, run

php --ini

This should give you the location of your php.ini ( just incase your editing the wrong one :D )

Did this help?

Answer 2

Are you sure memcached is installed in the correct location? What do you get if you run: locate memcache.so

Is memcached installed (the binary)? Does it require any extra libraries (libmemcache)?

Answer 3

Add an extension_dir directive to tell PHP where to load extensions from and remove the path from the extension directive.

extension = memcache.so
extension_dir = /usr/local/lib/php/extensions/no-debug-non-zts-20060613

Answer 4

One thing that helped me is to use

pecl uninstall memcache
pecl install memcache

Another thing (this applies only to rather old php versions though): http://www.hollub.at/phpmanual/ref.memcache.html says:

In order to use these functions you must compile PHP with Memcache support by using the --enable-memcache[=DIR] option. 

Answer 5

this is because of your /var/tmp mounted with noexec permission

you can try to recompile memcache using fuenfundachtzig command after temporarily delete /var/tmp symlink and create new /var/tmp folder. (this setting maybe differ from your server)

#rm /var/tmp
#mkdir /var/tmp

#pecl install memcache

then secure back your temp folder

#rm -rf /var/tmp
#ln -s /tmp /var/tmp

read more about securing tmp here

and how to use PECL with tmp mounted with noexec