apt-get install php-pear php5-dev libpcre3-dev make

pear upgrade

pecl install apc

apc安裝時會問一些問題，我都按照它預設的回答。

vi /etc/php5/conf.d/apc.ini

新增 apc.ini

[apc]

extension=apc.so

; enable APC

apc.enabled=1

; The number of shared memory segments

apc.shm_segments=1

; The size of each shared memory segment

apc.shm_size=64M

; The number of seconds a cache entry is allowed to idle in a slot in case this

; cache entry slot is needed by another entry.

apc.ttl=7200

重新啟動載入新設定

service php5-fpm restart

寫個php來看看APC有沒有安裝成功

<?php

	phpinfo();

?>

有出現apc就代表成功了，詳細設定還沒研究。