PHP扩展安装memcache模块时间:2010-06-24 15:50:55
安装环境RHEL 4Php 5.2.6安装环境RHEL 4Php 5.2.6
所需软件libevent-1.4.6-stable.tar.gz (http://monkey.org/~provos/libevent/)memcache-2.2.3.tgz (http://pecl.php.net/package/memcache)memcached-1.2.6.tar.gz (http://www.danga.com/memcached/)
安装配置
1. 安装libevent# tar zxf libevent-1.4.6-stable.tar.gz# cd libevent-1.4.6-stable# ./configure --prefix=/usr/local/servers/libevent# make && make install
2. 安装memcached# tar zxvf memcached-1.2.6.tar.gz# cd memcached-1.2.6# ./configure --prefix=/usr/local/servers/memcached --with-libevent=/usr/local/servers/libevent# make && make install
3. 运行memcached# /usr/local/servers/memcached -d -m 128 -l localhost -p 11211 -u root
-d 以守护程序（daemon）方式运行 memcached；-m 设置 memcached 可以使用的内存大小，单位为 M；-l 设置监听的 IP 地址，如果是本机的话，通常可以不设置此参数；-p 设置监听的端口，默认为 11211，所以也可以不设置此参数；-u 指定用户;
如果遇到运行memcached时遇到问题，错误提示如下：
/usr/local/servers/memcached/bin/memcached: error while loading shared libraries: libevent-1.4.so.2: cannot open shared object file: No such file or directory
则运行 LD_DUBUG=libs 就可以知道memcached启动时库的加载路径。具体如下:
# LD_DEBUG=libs /usr/local/servers/memcached/bin/memcached -v 10929: find library=libevent-1.4.so.2 [0]; searching 10929: search cache=/etc/ld.so.cache 10929: search path=/lib/tls/i686/sse2:/lib/tls/i686:/lib/tls/sse2:/lib/tls:/lib/i686/sse2:/lib/i686:/lib/sse2:/lib:/usr/lib/tls/i686/sse2:/usr/lib/tls/i686:/usr/lib/tls/sse2:/usr/lib/tls:/usr/lib/i686/sse2:/usr/lib/i686:/usr/lib/sse2:/usr/lib (system search path) 10929: trying file=/lib/tls/i686/sse2/libevent-1.4.so.2 10929: trying file=/lib/tls/i686/libevent-1.4.so.2 10929: trying file=/lib/tls/sse2/libevent-1.4.so.2 10929: trying file=/lib/tls/libevent-1.4.so.2 10929: trying file=/lib/i686/sse2/libevent-1.4.so.2 10929: trying file=/lib/i686/libevent-1.4.so.2 10929: trying file=/lib/sse2/libevent-1.4.so.2 10929: trying file=/lib/libevent-1.4.so.2 10929: trying file=/usr/lib/tls/i686/sse2/libevent-1.4.so.2 10929: trying file=/usr/lib/tls/i686/libevent-1.4.so.2 10929: trying file=/usr/lib/tls/sse2/libevent-1.4.so.2 10929: trying file=/usr/lib/tls/libevent-1.4.so.2 10929: trying file=/usr/lib/i686/sse2/libevent-1.4.so.2 10929: trying file=/usr/lib/i686/libevent-1.4.so.2 10929: trying file=/usr/lib/sse2/libevent-1.4.so.2 10929: trying file=/usr/lib/libevent-1.4.so.2 10929:
然后给libevent-1.4.so.2建立一个链接后再运行memcached：# ln -s /usr/local/servers/libevent/lib/libevent-1.4.so.2 /lib/libevent-1.4.so.2
4. 安装php的memcache扩展
可以使用php自带的pecl安装程序# /usr/local/servers/php5/bin/pecl install memcache
也可以从源码安装# tar zxf memcache-2.2.3.tgz # cd memcache-2.2.3# /usr/local/servers/php5/bin/phpize# ./configure --enable-memcache=/usr/local/servers/memcached --with-php-config=/usr/local/servers/php5/bin/php-config --with-apxs2=/usr/sbin/apxs# make && make inst
安装完后会有类似这样的提示：Installing shared extensions: /usr/local/servers/php5/lib/php/extensions/no-debug-non-zts-20060922/
把这个记住，然后修改php.ini，把
extension_dir = "./"修改为extension_dir = "/usr/local/servers/php5/lib/php/extensions/no-debug-non-zts-20060922/"
并添加一行extension="memcache.so"
/usr/local/webserver/php/sbin/php-fpm reload 重新加载php
5. 用phpinfo查看
测试模块
<?php
$memcache = new Memcache;$memcache->connect('localhost', 12000) or die ("Could not connect");
$version = $memcache->getVersion();echo "Server's version: ".$version."<br/> ";
$tmp_object = new stdClass;$tmp_object->str_attr = 'test';$tmp_object->int_attr = 123;
$memcache->set('key', $tmp_object, false, 10) or die ("Failed to save data at the server");echo "Store data in the cache (data will expire in 10 seconds)<br/> ";
$get_result = $memcache->get('key');echo "Data from the cache:<br/> ";
var_dump($get_result);
?>
显示结果:
Server's version: 1.2.6Store data in the cache (data will expire in 10 seconds)Data from the cache:
object(stdClass)[3] public 'str_attr' => string 'test' (length=4) public 'int_attr' => int 123
