How to use Memcached commands in PHP
In this article, Pig Mastiff shares with you how to use the Memcached command in PHP and makes a summary. I hope it can help everyone.
Portal: http://www.php.net/manual/zh/book.memcached.php
There is no memcached extension under windows, only memcache extension. Personal test, there is still a big difference between the two. So it is recommended to do it in linux.
<?php $mem = new Memcached(); //添加一台服务器资源
$mem->addServer('127.0.0.1', '11211'); //添加多台，分布式存储，第三个参数为权重值
/*
$servers = array(
array('127.0.0.1', 11211, 33),
array('127.0.0.2', 11211, 67),
);
$res = $mem->addServers($servers);
*/
//设置：键 值 过期时间（秒）
$mem->set('name', 'huangyuxin', 5); //注意：最大生命周期可设置为60*60*24*30 三十天的时间
//再往后的话要加上时间戳 time()+60*60*24*31（三十一天）
//获取值
$value = $mem->get('name'); //添加值，如果存在此键，false
$result = $mem->add('name','zhangsan')； //追加: 键 值 ,追加在一个已经存在的值得后面,不存在也为false
//setOption 这一句必须加上，不然追加不上
//prepend 前面追加
//如果Memcached::OPT_COMPRESSION常量开启，这个操作会失败，并引发一个警告，因为向压缩数据 后追加数据可能会导致解压不了。
$mem->setOption(Memcached::OPT_COMPRESSION, false); $mem->append('name','haha')； $value = $mem->get('name'); //这个是减掉元素的值，两个参数，第二个参数决定减掉数值几，默认是 1 ，increment 是加
$mem->set('age', 12, 30); $mem->decrement('age'); $mem->decrement('age',2); $value = $mem->get('age'); //删除元素
$mem->delete('age'); $mem->delete('age',60); /*
注意：
服务端在这段时间拒绝对这个key的add和replace命令.
由于这个时间段的存在, 元素被放入一个删除队列
表明它不可以通过get命令获取到值
但是同时 add和replace命令也从服务端内存删除
(表明元素会被立即删除并且之后对这个 key的存储命令也会成功)
*/
//删除多个
$mem->add('age', 12, 60); $mem->add('name', 'huangyuxin', 60); $res = $mem->deleteMulti(array('age','name')); //作废 :flush不会 真正的释放已有元素的内存， 而是逐渐的存入新元素重用那些内存。
$mem->flush(10);//10秒内清除元素
//获取所有键
$mem->getAllKeys(); /*
Memcached::getDelayed()向Memcached服务端发出一个检索
keys指定的多个 key对应元素的请求。这个方法不会等待响应而
是立即返回。当你需要收集元素值时， 调Memcached::fetch()
或 Memcached::fetchAll()。如果with_cas设置为true，会
同时请求每个元素的CAS标记。
*/
$m->set('int', 99); $m->set('array', array(11, 12)); $m->getDelayed(array('int', 'array'), true);
var_dump($m->fetchAll()); //获取多个值的信息
$mem->set('age', 12, 60); $mem->set('name', 'huangyuxin', 60); $res = $mem->getMulti(array('age', 'name')); //设置多个键
$items = array( 'key1' => 'value1', 'key2' => 'value2', 'key3' => 'value3',
); $mem->setMulti($items); $res = $mem->get('key1');//value
//返回系统常量
var_dump($mem->getOption(Memcached::OPT_COMPRESSION)); //返回最后一次操作的结果描述消息
$mem->add('a', 'bar'); // first time should succeed
echo $mem->getResultMessage(), "\n"; //SUCCESS
//查看此key在哪个服务器上
$mem->add('a', 'bar'); // first time should succeed
$res = $mem->getServerByKey('a'); //array(3) { ["host"]=> string(9) "127.0.0.1" ["port"]=> int(11211) ["weight"]=> int(0) }
//返回服务器列表
var_dump($mem->getServerList()); //返回服务器状态
var_dump($mem->getServerList()); //服务器版本
print_r($mem->getVersion()); //判断是否是持久链接
$res = $mem->isPersistent(); //Memcached::replace()和Memcached::set()类似，但是如果 服务端不存在key， 操作将失败。
$m->set('hh', 'aaaa'); $m->replace('hh', 'bbbb'); $res = $m->get('hh'); //删除从已知的服务器列表中的所有缓存服务器，重置回空。
$mem->resetServerList(); //对某一key重新设置生命周期
$m->set('aaaa', 'aaaa', 600); $m->touch('aaaa', 5); $value= $m->get('aaaa'); //关闭打开的链接
$m->quit();
var_dump($value);The following suffix is ByKey, which is generally used by multiple Memcached Servers. If you master the above commands, you will basically use them below.
touch->touchByKey setMulti->setMultiByKey getMulti->getMultiBykey replace->replaceByKey append->appendByKey prepend->prependByKey getServerByKey getdelay->getDelayedByKey increment->incrementByKey decrement->decrementByKey add->addByKey get->getByKey delete->deleteMultiByKey
$m->addByKey('指定服务器','键',"值")
Waiting more than taking action is equal to waiting to die.
Portal: http://www.php.net/manual/zh/book.memcached.php
There is no memcached extension under windows, only memcache extension. Personal test, there is still a big difference between the two. So it is recommended to do it in linux.
<?php $mem = new Memcached(); //添加一台服务器资源
$mem->addServer('127.0.0.1', '11211'); //添加多台，分布式存储，第三个参数为权重值
/*
$servers = array(
array('127.0.0.1', 11211, 33),
array('127.0.0.2', 11211, 67),
);
$res = $mem->addServers($servers);
*/
//设置：键 值 过期时间（秒）
$mem->set('name', 'huangyuxin', 5); //注意：最大生命周期可设置为60*60*24*30 三十天的时间
//再往后的话要加上时间戳 time()+60*60*24*31（三十一天）
//获取值
$value = $mem->get('name'); //添加值，如果存在此键，false
$result = $mem->add('name','zhangsan')； //追加: 键 值 ,追加在一个已经存在的值得后面,不存在也为false
//setOption 这一句必须加上，不然追加不上
//prepend 前面追加
//如果Memcached::OPT_COMPRESSION常量开启，这个操作会失败，并引发一个警告，因为向压缩数据 后追加数据可能会导致解压不了。
$mem->setOption(Memcached::OPT_COMPRESSION, false); $mem->append('name','haha')； $value = $mem->get('name'); //这个是减掉元素的值，两个参数，第二个参数决定减掉数值几，默认是 1 ，increment 是加
$mem->set('age', 12, 30); $mem->decrement('age'); $mem->decrement('age',2); $value = $mem->get('age'); //删除元素
$mem->delete('age'); $mem->delete('age',60); /*
注意：
服务端在这段时间拒绝对这个key的add和replace命令.
由于这个时间段的存在, 元素被放入一个删除队列
表明它不可以通过get命令获取到值
但是同时 add和replace命令也从服务端内存删除
(表明元素会被立即删除并且之后对这个 key的存储命令也会成功)
*/
//删除多个
$mem->add('age', 12, 60); $mem->add('name', 'huangyuxin', 60); $res = $mem->deleteMulti(array('age','name')); //作废 :flush不会 真正的释放已有元素的内存， 而是逐渐的存入新元素重用那些内存。
$mem->flush(10);//10秒内清除元素
//获取所有键
$mem->getAllKeys(); /*
Memcached::getDelayed()向Memcached服务端发出一个检索
keys指定的多个 key对应元素的请求。这个方法不会等待响应而
是立即返回。当你需要收集元素值时， 调Memcached::fetch()
或 Memcached::fetchAll()。如果with_cas设置为true，会
同时请求每个元素的CAS标记。
*/
$m->set('int', 99); $m->set('array', array(11, 12)); $m->getDelayed(array('int', 'array'), true);
var_dump($m->fetchAll()); //获取多个值的信息
$mem->set('age', 12, 60); $mem->set('name', 'huangyuxin', 60); $res = $mem->getMulti(array('age', 'name')); //设置多个键
$items = array( 'key1' => 'value1', 'key2' => 'value2', 'key3' => 'value3',
); $mem->setMulti($items); $res = $mem->get('key1');//value
//返回系统常量
var_dump($mem->getOption(Memcached::OPT_COMPRESSION)); //返回最后一次操作的结果描述消息
$mem->add('a', 'bar'); // first time should succeed
echo $mem->getResultMessage(), "\n"; //SUCCESS
//查看此key在哪个服务器上
$mem->add('a', 'bar'); // first time should succeed
$res = $mem->getServerByKey('a'); //array(3) { ["host"]=> string(9) "127.0.0.1" ["port"]=> int(11211) ["weight"]=> int(0) }
//返回服务器列表
var_dump($mem->getServerList()); //返回服务器状态
var_dump($mem->getServerList()); //服务器版本
print_r($mem->getVersion()); //判断是否是持久链接
$res = $mem->isPersistent(); //Memcached::replace()和Memcached::set()类似，但是如果 服务端不存在key， 操作将失败。
$m->set('hh', 'aaaa'); $m->replace('hh', 'bbbb'); $res = $m->get('hh'); //删除从已知的服务器列表中的所有缓存服务器，重置回空。
$mem->resetServerList(); //对某一key重新设置生命周期
$m->set('aaaa', 'aaaa', 600); $m->touch('aaaa', 5); $value= $m->get('aaaa'); //关闭打开的链接
$m->quit();
var_dump($value);The following suffix is ByKey, which is generally used by multiple Memcached Servers. If you master the above commands, you will basically use them below.
touch->touchByKey setMulti->setMultiByKey getMulti->getMultiBykey replace->replaceByKey append->appendByKey prepend->prependByKey getServerByKey getdelay->getDelayedByKey increment->incrementByKey decrement->decrementByKey add->addByKey get->getByKey delete->deleteMultiByKey
$m->addByKey('指定服务器','键',"值")
Related recommendations:
How to install Memcached service method in linux
Ubuntu memcached installation and configuration method in php
PHP memory caching function memcached example
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