我的系统环境是：centos6.5
安装php memcached遇到的坑。
参考博主【阳光温暖了心情】文章地址：http://www.cnblogs.com/yangxia-test/p/4195288.html
文件：libmemcached-1.0.18.tar.gz
1、libmemcached下载地址：https://launchpad.net/libmemcached/+download
文件：memcached-2.2.0.tgz
2、php-memcached下载地址：http://pecl.php.net/package/memcached
在 php-memcached官网发现有最新的版本3.0.3 stable版本，安装几次没有成功，总提示：
/bby_install/install-pack/memcached-3.0.1/php_memcached.c:4361: error: too few arguments to function ‘zend_declare_class_constant_bool’
/bby_install/install-pack/memcached-3.0.1/php_memcached.c: In function ‘zm_startup_memcached’:
/bby_install/install-pack/memcached-3.0.1/php_memcached.c:4371: error: ‘zend_object_handlers’ has no member named ‘offset’
/bby_install/install-pack/memcached-3.0.1/php_memcached.c:4373: error: ‘zend_object_handlers’ has no member named ‘free_obj’
/bby_install/install-pack/memcached-3.0.1/php_memcached.c:4378: error: too few arguments to function ‘zend_register_internal_class’
/bby_install/install-pack/memcached-3.0.1/php_memcached.c:4378: warning: assignment from incompatible pointer type
/bby_install/install-pack/memcached-3.0.1/php_memcached.c:4379: warning: assignment from incompatible pointer type
/bby_install/install-pack/memcached-3.0.1/php_memcached.c:4393: error: too few arguments to function ‘zend_register_internal_class_ex’
/bby_install/install-pack/memcached-3.0.1/php_memcached.c:4393: warning: assignment from incompatible pointer type
/bby_install/install-pack/memcached-3.0.1/php_memcached.c:4379: warning: assignment from incompatible pointer type
/bby_install/install-pack/memcached-3.0.1/php_memcached.c:4393: error: too few arguments to function ‘zend_register_internal_class_ex’
/bby_install/install-pack/memcached-3.0.1/php_memcached.c:4393: warning: assignment from incompatible pointer type
make: *** [php_memcached.lo] Error 1……
之后下载3.0.1编译还是一样不能通过，只好根据博主文章中提到的，下载了php-memcached 2.2.0,按照博主介绍的方法安装，一步到位安装成功。
参考博主【阳光温暖了心情】文章地址：http://www.cnblogs.com/yangxia-test/p/4195288.html
php的扩展memcache，不支持cas，所以我们要装memcached扩展，memcached扩展是基于libmemcached，所以要先安装libmemcached
一、下载软件
1、libmemcached下载地址：https://launchpad.net/libmemcached/+download
文件：memcached-2.2.0.tgz
2、php-memcached下载地址：http://pecl.php.net/package/memcached
文件：libmemcached-1.0.18.tar.gz
二、安装libmemcached
[root@vm15 local]# mkdir -p libmemcached
[root@vm15 local]# tar zxvf libmemcached-1.0.18.tar.gz
[root@vm15 local]# cd libmemcached-1.0.18
[root@vm15 libmemcached-1.0.18]# ./configure --prefix=/usr/local/libmemcached --with-memcached
[root@vm15 libmemcached-1.0.18]# make
[root@vm15 libmemcached-1.0.18]# make install
三、安装php-memcached
[root@vm15 local]# mkdir -p phpmemcached
[root@vm15 local]# tar zxvf memcached-2.2.0.tgz
[root@vm15 local]# cd memcached-2.2.0
[root@vm15 memcached-2.2.0]# /usr/local/php/bin/phpize
Configuring for:
PHP Api Version: 20131106
Zend Module Api No: 20131226
Zend Extension Api No: 220131226
[root@vm15 memcached-2.2.0]# ./configure --enable-memcached --with-php-config=/usr/local/php/bin/php-config --with-libmemcached-dir=/usr/local/libmemcached --disable-memcached
-sasl
[root@vm15 memcached-2.2.0]# make
[root@vm15 memcached-2.2.0]# make install
Installing shared extensions: /usr/local/php/lib/php/extensions/no-debug-zts-20131226/
[root@vm15 memcached-2.2.0]# ll /usr/local/php/lib/php/extensions/no-debug-zts-20131226/
total 2140
-rwxr-xr-x. 1 root root 325608 Dec 30 15:59 memcached.so
-rwxr-xr-x. 1 root root 453766 Dec 30 17:44 memcache.so
-rwxr-xr-x. 1 root root 540834 Dec 19 15:38 opcache.so
-rwxr-xr-x. 1 root root 861055 Dec 30 16:47 redis.so
[root@vm15 memcached-2.2.0]# vi + /usr/local/php/lib/php.ini
加上extension=memcached.so
#重启Apache服务
[root@vm15 memcached-2.2.0]# /usr/local/apache2/bin/apachectl restart
查看phpinfo可以看到支持了