这里选择的是稳定版本的1.2.2版本，2.0版本的不稳定。

wget http://xcache.lighttpd.net/pub/Releases/1.2.2/xcache-1.2.2.tar.gz

tar -zxf xcache-1.2.2.tar.gz

cd xcache

phpize

./configure --enable-xcache

make

make install

记录下xcache的安装目录。

编辑php.ini文件，加入Xcache，作为Zend扩展。

[xcache-common]

;; install as zend extension (recommended), normally "$extension_dir/xcache.so"

zend_extension = /路径/xcache.so

;; or install as extension, make sure your extension_dir setting is correct

; extension = xcache.so

[xcache.admin]

xcache.admin.auth = On

xcache.admin.user = "mOo"

; xcache.admin.pass = md5($your_password)

xcache.admin.pass = ""

[xcache]

xcache.shm_scheme = "mmap"

xcache.size = 32M

xcache.count = 1

xcache.slots = 8K

xcache.ttl = 3600

xcache.gc_interval = 300

; Same as aboves but for variable cache

; If you don't know for sure that you need this, you probably don't

xcache.var_size = 0M

xcache.var_count = 1

xcache.var_slots = 8K

xcache.var_ttl = 0

xcache.var_maxttl = 0

xcache.var_gc_interval = 300

; N/A for /dev/zero

xcache.readonly_protection = Off

xcache.mmap_path = "/dev/zero"

xcache.cacher = On

xcache.stat = On

然后重启下web服务器即可。

php -v 测试下是否有显示Xcache加载成功