apc 安装下了最新的APC-3.0.18.tgz，解压，进入目录

    apc下载地址 http://pecl.php.net/package/APC

    /usr/local/php/bin/phpize （生产configure文件）

    。/configure ——enable-apc ——enable-apc-mmap ——with-php-config=/usr/local/bin/php-config

    Make make.Install

    cp /usr/local/lib/php/extensions/no-debug-zts-20060613/apc.so /usr/local/lib/php/extensions/apc.so

    chmod 755 /usr/local/lib/php/extensions/apc.so

    配置/etc/php.ini 末尾加入

    extension=apc.so

    apc.enabled = 1

    apc.cache_by_default = on

    apc.shm_segments = 1

    apc.shm_size = 128

    apc.ttl = 7200

    apc.user_ttl = 7200

    apc.num_files_hint = 1024

    apc.write_lock = On

    apc.gc_ttl=3600

    apc.ttl=0

    apc.mmap_file_mask=/tmp/apc.XXXXXX

    重启apache