Shulou(Shulou.com)06/01 Report--

This article introduces the relevant knowledge of "the solution to the problem of installing memcache extension in PHP under CentOS". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

The system version is 5.2. record the method of installing memcached first:

The code is as follows:

Cd ~ / memcached

Wget-c http://www.monkey.org/~provos/libevent-1.4.10-stable.tar.gz

Wget-c http://memcached.googlecode.com/files/memcached-1.2.8.tar.gz

# install libevent

Tar-zxvf libevent-1.4.10-stable.tar.gz

Cd libevent-1.4.10-stable

. / configure

Make

Make install

# install memcached

Cd..

Tar-zxvf memcached-1.2.8.tar.gz

Cd memcached-1.2.8

. / configure

Make

Make install

# if it is a 64-bit system, you also need to copy the libevent file to / wp-content/lib64/ to solve the error while loading shared libraries problem

Cp-R / wp-content/local/lib/libevent* / wp-content/lib64/

All right, start installing the extension of php. The nightmare began. I thought it would be OK to install php-devel.x86_64 and php-pecl-memcache.x86_64 directly with yum, but after installing it, I couldn't find the memcache extension in phpinfo (). I still couldn't do it again. Goooooooooooooogle, I found an article called "PHP Pecl Memcached module installation problems". It was saved by remove php-pecl-memcache.x86_64 and then executed it.

Pecl install memcache

Smooth installation, open / etc/php.d/ to take a look, there is no memcache.ini, all right, manually to / etc/php.ini plus extension=memcache.so, all right, restart httpd, refresh phpinfo (), unexpectedly not yet, I am depressed.

Looking back, I seem to have missed a place not checked, immediately open / wp-content/lib64/php/modules/ to check, sure enough, there is no memcache.so, where will it be? Find-name, originally hidden under / wp-content/local/lib/php/extensions/no-debug-non-zts-20060613/, copied to / wp-content/lib64/php/modules/ and tried again, the long-lost memcache extension appeared. T T

Memcached parameter description:

The-d option is to start a daemon

-m the amount of memory allocated to Memcache, in MB

-u users running Memcache

-l IP address of the server that is listening

-p set the port on which Memcache listens, preferably above 1024

-c the maximum number of concurrent connections running. The default is 1024, which is set according to the load of your server.

-P set the pid file to save Memcache

Start:

Memcached-d-u root-m 128-c 8192

View status:

Watch "echo stats | nc 127.0.0.1 11211"

Status description:

Number of seconds that uptime:memcached runs

Cmd_get: the number of times the cache is queried. By dividing the two data, you can get the average number of requests for cache per second.

Cmd_set: set the number of times key= > value

Get_hits: the number of cache hits. Cache hit ratio = get_hits/cmd_get * 100%

Scurr_items: the number of key-value pairs now in the cache

Related website:

Libevent: http://www.monkey.org/~provos/libevent/

Memcached: http://danga.com/memcached/

PHP Memcached Extension: http://pecl.php.net/package/memcache

Undefined

[shell]

[root@~] # pecl install memcache

Downloading memcache-2.2.6.tgz...

Starting to download memcache-2.2.6.tgz (35957 bytes)

.done: 35957 bytes

11 source files, building

WARNING: php_bin / opt/php/bin/php appears to have a suffix / bin/php, but config variable php_suffix does not match

Running: phpize

Configuring for:

PHP Api Version: 20090626

Zend Module Api No: 20090626

Zend Extension Api No: 220090626

Enable memcache session handler support? [yes]: n

[/ shell]

[shell]

Running: make INSTALL_ROOT= "/ var/tmp/pear-build-root/install-memcache-2.2.6" install

Installing shared extensions: / var/tmp/pear-build-root/install-memcache-2.2.6/opt/php/lib/php/extensions/no-debug-non-zts-20090626/

Running: find "/ var/tmp/pear-build-root/install-memcache-2.2.6" | xargs ls-dils

11370548 4 drwxr-xr-x 3 root root 4096 Jan 6 15:55 / var/tmp/pear-build-root/install-memcache-2.2.6

11370602 4 drwxr-xr-x 3 root root 4096 Jan 6 15:55 / var/tmp/pear-build-root/install-memcache-2.2.6/opt

11370603 4 drwxr-xr-x 3 root root 4096 Jan 6 15:55 / var/tmp/pear-build-root/install-memcache-2.2.6/opt/php

11370604 4 drwxr-xr-x 3 root root 4096 Jan 6 15:55 / var/tmp/pear-build-root/install-memcache-2.2.6/opt/php/lib

11370605 4 drwxr-xr-x 3 root root 4096 Jan 6 15:55 / var/tmp/pear-build-root/install-memcache-2.2.6/opt/php/lib/php

11370606 4 drwxr-xr-x 3 root root 4096 Jan 6 15:55 / var/tmp/pear-build-root/install-memcache-2.2.6/opt/php/lib/php/extensions

11370607 4 drwxr-xr-x 2 root root 4096 Jan 6 15:55 / var/tmp/pear-build-root/install-memcache-2.2.6/opt/php/lib/php/extensions/no-debug-non-zts-20090626

11370601 236-rwxr-xr-x 1 root root 235639 Jan 6 15:55 / var/tmp/pear-build-root/install-memcache-2.2.6/opt/php/lib/php/extensions/no-debug-non-zts-20090626/memcache.so

Build process completed successfully

Installing'/ opt/php/lib/php/extensions/no-debug-non-zts-20090626/memcache.so'

Install ok: channel://pecl.php.net/memcache-2.2.6

Configuration option "php_ini" is not set to php.ini location

You should add "extension=memcache.so" to php.ini

[/ shell]

This is the end of the content of "the solution to the problem of installing memcache extensions on PHP under CentOS". Thank you for reading. If you want to know more about the industry, you can follow the website, the editor will output more high-quality practical articles for you!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.