安装此 PECL 扩展库的信息可在手册中标题为 PECL 扩展库安装的一章中找到。 更多信息如新版本，下载，源文件，维护者信息以及更新日志等可以在这里找到： » http://pecl.php.net/package/memcached
If libmemcached is installed in a non-standard location, use --with-libmemcached-dir=DIR switch, where DIR is the libmemcached install prefix. This directory has to contain the include/libmemcached/memcached.h file.
Zlib is required for compression support. To specify non-standard installation of Zlib, use --with-zlib-dir=DIR switch, where DIR is the Zlib install prefix.
Session handler support is enabled by default. To disable it, use --disable-memcached-session switch.