Linux系统安装memcached 首先要先安装libevent库。
centos 下执行
yum install libevent libevent-devel
查看memcached 是否已经安装
which memcached //如果已经安装 输出类似“/usr/bin/memcached”
安装memcached 执行:
yum install memcached
安装php memcached 扩展 php-pecl-memcached
yum -y install php72w-pecl-memcached //我的PHP版本是php7.2的,如果版本不对会报错误:php72w-common conflicts with php-common-5.4.16-45.el7.x86_64错误
查看是否安装php-pecl-memcached 扩展
php -m | grep memcache // 安装成功会输出memcached, 否则没有输
设置开机启动
sudo systemctl enable memcached
启动memcached
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sudo systemctl start memcached
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启动memcached 服务,在终端输入
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# /usr/local/bin/memcached -d -m 10 -u root -l 192.168.0.200 -p 11211 -c 256 -P /tmp/memcached.pid
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查看memcached 监听情况
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lsof -i tcp:11211 <br>输出<br>COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME<br>memcached 5821 vagrant 26u IPv6 42350 0t0 TCP localhost:memcache (LISTEN)<br>memcached 5821 vagrant 27u IPv4 42351 0t0 TCP php-site:memcache (LISTEN)
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说明监听11211端口成功
会在/usr/lib64/php/modules/ 下生成memcached.so
在php.ini中开启 extension=/usr/lib64/php/modules/memcached.so
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[Memcache]<br>extension=/usr/lib64/php/modules/memcached.so
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在php.ini文件中添加memcache扩展文件后,在xshell中执行会报错,但不影响web浏览器端效果,
然后重启php-fpm
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sudo systemctl restart php-fpm
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phpinfo()中能够看到memcached
测试:
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<?php
$mem = new Memcached;
$mem->connect( "127.0.0.1" , 11211);
$mem-> set ( 'key' , 'hello test!' , 0, 60);
$val = $mem-> get ( 'key' );
echo $val;
?>
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上面测试代码有问题,我的测试代码:
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<?php
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$mem = new Memcached;
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$mem->addServer("127.0.0.1", 11211);
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$mem->set('key', 'hello test!', 10);
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$val = $mem->get('key');
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echo $val;
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