php操作redis常用操作方法代码小结
这篇文章主要介绍了php操作redis常用方法代码例子,可以操作string类型、list类型和set类型的数据,需要的朋友可以参考下
下面整理一下php处理redis的phpredis这个扩展的例子。
1，connect
描述：实例连接到一个Redis.
参数：host: string，port: int
返回值：BOOL 成功返回：TRUE;失败返回：FALSE
< ?php $redis = new redis(); $result = $redis->connect('127.0.0.1', 6379); var_dump($result); //结果：bool(true) ?>
2，set
描述：设置key和value的值
参数：Key Value
返回值：BOOL 成功返回：TRUE;失败返回：FALSE
< ?php $redis = new redis(); $redis->connect('127.0.0.1', 6379); $result = $redis->set('test',"11111111111"); var_dump($result); //结果：bool(true) ?>
3，get
描述：获取有关指定键的值
参数：key
返回值：string或BOOL 如果键不存在，则返回 FALSE。否则，返回指定键对应的value值。
< ?php $redis = new redis(); $redis->connect('127.0.0.1', 6379); $result = $redis->get('test'); var_dump($result); //结果：string(11) "11111111111" ?>
4，delete
描述：删除指定的键
参数：一个键，或不确定数目的参数，每一个关键的数组：key1 key2 key3 … keyN
返回值：删除的项数
< ?php $redis = new redis(); $redis->connect('127.0.0.1', 6379); $redis->set('test',"1111111111111"); echo $redis->get('test'); //结果：1111111111111 $redis->delete('test'); var_dump($redis->get('test')); //结果：bool(false) ?>
5，setnx
描述：如果在数据库中不存在该键，设置关键值参数
参数：key value
返回值：BOOL 成功返回：TRUE;失败返回：FALSE
< ?php $redis = new redis(); $redis->connect('127.0.0.1', 6379); $redis->set('test',"1111111111111"); $redis->setnx('test',"22222222"); echo $redis->get('test'); //结果：1111111111111 $redis->delete('test'); $redis->setnx('test',"22222222"); echo $redis->get('test'); //结果：22222222 ?>
6，exists
描述：验证指定的键是否存在
参数key
返回值：Bool 成功返回：TRUE;失败返回：FALSE
< ?php $redis = new redis(); $redis->connect('127.0.0.1', 6379); $redis->set('test',"1111111111111"); var_dump($redis->exists('test')); //结果：bool(true) ?>
7，incr
描述：数字递增存储键值键.
参数：key value：将被添加到键的值
返回值：INT the new value
< ?php
$redis = new redis();
$redis->connect('127.0.0.1', 6379);
$redis->set('test',"123");
var_dump($redis->incr("test")); //结果：int(124)
var_dump($redis->incr("test")); //结果：int(125)
?>
8，decr
描述：数字递减存储键值。
参数：key value：将被添加到键的值
返回值：INT the new value
< ?php
$redis = new redis();
$redis->connect('127.0.0.1', 6379);
$redis->set('test',"123");
var_dump($redis->decr("test")); //结果：int(122)
var_dump($redis->decr("test")); //结果：int(121)
?>9，getMultiple
描述：取得所有指定键的值。如果一个或多个键不存在，该数组中该键的值为假
参数：其中包含键值的列表数组
返回值：返回包含所有键的值的数组
< ?php $redis = new redis(); $redis->connect('127.0.0.1', 6379); $redis->set('test1',"1"); $redis->set('test2',"2"); $result = $redis->getMultiple(array('test1','test2')); print_r($result); //结果：Array ( [0] => 1 [1] => 2 ) ?>
10，lpush
描述：由列表头部添加字符串值。如果不存在该键则创建该列表。如果该键存在，而且不是一个列表，返回FALSE。
参数：key,value
返回值：成功返回数组长度，失败false
< ?php
$redis = new redis();
$redis->connect('127.0.0.1', 6379);
$redis->delete('test');
var_dump($redis->lpush("test","111")); //结果：int(1)
var_dump($redis->lpush("test","222")); //结果：int(2)
?>11，rpush
描述：由列表尾部添加字符串值。如果不存在该键则创建该列表。如果该键存在，而且不是一个列表，返回FALSE。
参数：key,value
返回值：成功返回数组长度，失败false
< ?php
$redis = new redis();
$redis->connect('127.0.0.1', 6379);
$redis->delete('test');
var_dump($redis->lpush("test","111")); //结果：int(1)
var_dump($redis->lpush("test","222")); //结果：int(2)
var_dump($redis->rpush("test","333")); //结果：int(3)
var_dump($redis->rpush("test","444")); //结果：int(4)
?>12，lpop
描述：返回和移除列表的第一个元素
参数：key
返回值：成功返回第一个元素的值 ，失败返回false
< ?php
$redis = new redis();
$redis->connect('127.0.0.1', 6379);
$redis->delete('test');
$redis->lpush("test","111");
$redis->lpush("test","222");
$redis->rpush("test","333");
$redis->rpush("test","444");
var_dump($redis->lpop("test")); //结果：string(3) "222"
?>13，lsize,llen
描述：返回的列表的长度。如果列表不存在或为空，该命令返回0。如果该键不是列表，该命令返回FALSE。
参数：Key
返回值：成功返回数组长度，失败false
< ?php
$redis = new redis();
$redis->connect('127.0.0.1', 6379);
$redis->delete('test');
$redis->lpush("test","111");
$redis->lpush("test","222");
$redis->rpush("test","333");
$redis->rpush("test","444");
var_dump($redis->lsize("test")); //结果：int(4)
?>14，lget
描述：返回指定键存储在列表中指定的元素。 0第一个元素，1第二个… -1最后一个元素，-2的倒数第二…错误的索引或键不指向列表则返回FALSE。
参数：key index
返回值：成功返回指定元素的值，失败false
< ?php
$redis = new redis();
$redis->connect('127.0.0.1', 6379);
$redis->delete('test');
$redis->lpush("test","111");
$redis->lpush("test","222");
$redis->rpush("test","333");
$redis->rpush("test","444");
var_dump($redis->lget("test",3)); //结果：string(3) "444"
?>15，lset
描述：为列表指定的索引赋新的值,若不存在该索引返回false.
参数：key index value
返回值：成功返回true,失败false
< ?php
$redis = new redis();
$redis->connect('127.0.0.1', 6379);
$redis->delete('test');
$redis->lpush("test","111");
$redis->lpush("test","222");
var_dump($redis->lget("test",1)); //结果：string(3) "111"
var_dump($redis->lset("test",1,"333")); //结果：bool(true)
var_dump($redis->lget("test",1)); //结果：string(3) "333"
?>
16，lgetrange
描述：
返回在该区域中的指定键列表中开始到结束存储的指定元素，lGetRange(key, start, end)。0第一个元素，1第二个元素… -1最后一个元素，-2的倒数第二…
参数：key start end
返回值：成功返回查找的值，失败false
< ?php
$redis = new redis();
$redis->connect('127.0.0.1', 6379);
$redis->delete('test');
$redis->lpush("test","111");
$redis->lpush("test","222");
print_r($redis->lgetrange("test",0,-1)); //结果：Array ( [0] => 222 [1] => 111 )
?>
17,lremove
描述：从列表中从头部开始移除count个匹配的值。如果count为零，所有匹配的元素都被删除。如果count是负数，内容从尾部开始删除。
参数：key count value
返回值：成功返回删除的个数，失败false
< ?php $redis = new redis(); $redis->connect('127.0.0.1', 6379); $redis->delete('test'); $redis->lpush('test','a'); $redis->lpush('test','b'); $redis->lpush('test','c'); $redis->rpush('test','a'); print_r($redis->lgetrange('test', 0, -1)); //结果：Array ( [0] => c [1] => b [2] => a [3] => a ) var_dump($redis->lremove('test','a',2)); //结果：int(2) print_r($redis->lgetrange('test', 0, -1)); //结果：Array ( [0] => c [1] => b ) ?>
18，sadd
描述：为一个Key添加一个值。如果这个值已经在这个Key中，则返回FALSE。
参数：key value
返回值：成功返回true,失败false
< ?php $redis = new redis(); $redis->connect('127.0.0.1', 6379); $redis->delete('test'); var_dump($redis->sadd('test','111')); //结果：bool(true) var_dump($redis->sadd('test','333')); //结果：bool(true) print_r($redis->sort('test')); //结果：Array ( [0] => 111 [1] => 333 ) ?>
19，sremove
描述：删除Key中指定的value值
参数：key member
返回值：true or false
< ?php $redis = new redis(); $redis->connect('127.0.0.1', 6379); $redis->delete('test'); $redis->sadd('test','111'); $redis->sadd('test','333'); $redis->sremove('test','111'); print_r($redis->sort('test')); //结果：Array ( [0] => 333 ) ?>
20,smove
描述：将Key1中的value移动到Key2中
参数：srcKey dstKey member
返回值：true or false
< ?php $redis = new redis(); $redis->connect('127.0.0.1', 6379); $redis->delete('test'); $redis->delete('test1'); $redis->sadd('test','111'); $redis->sadd('test','333'); $redis->sadd('test1','222'); $redis->sadd('test1','444'); $redis->smove('test',"test1",'111'); print_r($redis->sort('test1')); //结果：Array ( [0] => 111 [1] => 222 [2] => 444 ) ?>
21，scontains
描述：检查集合中是否存在指定的值。
参数：key value
返回值：true or false
< ?php $redis = new redis(); $redis->connect('127.0.0.1', 6379); $redis->delete('test'); $redis->sadd('test','111'); $redis->sadd('test','112'); $redis->sadd('test','113'); var_dump($redis->scontains('test', '111')); //结果：bool(true) ?>
22,ssize
描述：返回集合中存储值的数量
参数：key
返回值：成功返回数组个数，失败0
< ?php $redis = new redis(); $redis->connect('127.0.0.1', 6379); $redis->delete('test'); $redis->sadd('test','111'); $redis->sadd('test','112'); echo $redis->ssize('test'); //结果：2 ?>
23，spop
描述：随机移除并返回key中的一个值
参数：key
返回值：成功返回删除的值，失败false
< ?php
$redis = new redis();
$redis->connect('127.0.0.1', 6379);
$redis->delete('test');
$redis->sadd("test","111");
$redis->sadd("test","222");
$redis->sadd("test","333");
var_dump($redis->spop("test")); //结果：string(3) "333"
?>24,sinter
描述：返回一个所有指定键的交集。如果只指定一个键，那么这个命令生成这个集合的成员。如果不存在某个键，则返回FALSE。
参数：key1, key2, keyN
返回值：成功返回数组交集，失败false
< ?php
$redis = new redis();
$redis->connect('127.0.0.1', 6379);
$redis->delete('test');
$redis->sadd("test","111");
$redis->sadd("test","222");
$redis->sadd("test","333");
$redis->sadd("test1","111");
$redis->sadd("test1","444");
var_dump($redis->sinter("test","test1")); //结果：array(1) { [0]=> string(3) "111" }
?>25,sinterstore
描述：执行sInter命令并把结果储存到新建的变量中。
参数：
Key: dstkey, the key to store the diff into.
Keys: key1, key2… keyN. key1..keyN are intersected as in sInter.
返回值：成功返回，交集的个数，失败false
< ?php
$redis = new redis();
$redis->connect('127.0.0.1', 6379);
$redis->delete('test');
$redis->sadd("test","111");
$redis->sadd("test","222");
$redis->sadd("test","333");
$redis->sadd("test1","111");
$redis->sadd("test1","444");
var_dump($redis->sinterstore('new',"test","test1")); //结果：int(1)
var_dump($redis->smembers('new')); //结果:array(1) { [0]=> string(3) "111" }
?>
26,sunion
描述：
返回一个所有指定键的并集
参数：
Keys: key1, key2, … , keyN
返回值：成功返回合并后的集，失败false
< ?php
$redis = new redis();
$redis->connect('127.0.0.1', 6379);
$redis->delete('test');
$redis->sadd("test","111");
$redis->sadd("test","222");
$redis->sadd("test","333");
$redis->sadd("test1","111");
$redis->sadd("test1","444");
print_r($redis->sunion("test","test1")); //结果：Array ( [0] => 111 [1] => 222 [2] => 333 [3] => 444 )
?>27,sunionstore
描述：执行sunion命令并把结果储存到新建的变量中。
参数：
Key: dstkey, the key to store the diff into.
Keys: key1, key2… keyN. key1..keyN are intersected as in sInter.
返回值：成功返回，交集的个数，失败false
< ?php
$redis = new redis();
$redis->connect('127.0.0.1', 6379);
$redis->delete('test');
$redis->sadd("test","111");
$redis->sadd("test","222");
$redis->sadd("test","333");
$redis->sadd("test1","111");
$redis->sadd("test1","444");
var_dump($redis->sinterstore('new',"test","test1")); //结果：int(4)
print_r($redis->smembers('new')); //结果:Array ( [0] => 111 [1] => 222 [2] => 333 [3] => 444 )
?>28,sdiff
描述：返回第一个集合中存在并在其他所有集合中不存在的结果
参数：Keys: key1, key2, … , keyN: Any number of keys corresponding to sets in redis.
返回值：成功返回数组，失败false
< ?php
$redis = new redis();
$redis->connect('127.0.0.1', 6379);
$redis->delete('test');
$redis->sadd("test","111");
$redis->sadd("test","222");
$redis->sadd("test","333");
$redis->sadd("test1","111");
$redis->sadd("test1","444");
print_r($redis->sdiff("test","test1")); //结果：Array ( [0] => 222 [1] => 333 )
?>29,sdiffstore
描述：执行sdiff命令并把结果储存到新建的变量中。
参数：
Key: dstkey, the key to store the diff into.
Keys: key1, key2, … , keyN: Any number of keys corresponding to sets in redis
返回值：成功返回数字，失败false
< ?php
$redis = new redis();
$redis->connect('127.0.0.1', 6379);
$redis->delete('test');
$redis->sadd("test","111");
$redis->sadd("test","222");
$redis->sadd("test","333");
$redis->sadd("test1","111");
$redis->sadd("test1","444");
var_dump($redis->sdiffstore('new',"test","test1")); //结果：int(2)
print_r($redis->smembers('new')); //结果:Array ( [0] => 222 [1] => 333 )
?>30,smembers, sgetmembers
描述：
返回集合的内容
参数：Key: key
返回值：An array of elements, the contents of the set.
< ?php
$redis = new redis();
$redis->connect('127.0.0.1', 6379);
$redis->delete('test');
$redis->sadd("test","111");
$redis->sadd("test","222");
print_r($redis->smembers('test')); //结果:Array ( [0] => 111 [1] => 222 )
?>31,setex，ttl
描述：
setex设置key，value的过期时间
ttl返回某key的过期剩余时间
$redis->setex("test",20,"value"); //设置key为test，value为value的过期时间为20秒
echo $redis->get("test");
echo $redis->ttl("test"); //返回剩余过期时间（已过期返回-2，无过期时间返回-1）php-redis当中，有很多不同名字，但是功能一样的函数，例如：lrem和lremove，这里就不例举了。
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How to build the redis cluster mode
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How to clear redis data
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How to view all keys in redis
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How to start the server with redis
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How to read redis queue
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To read a queue from Redis, you need to get the queue name, read the elements using the LPOP command, and process the empty queue. The specific steps are as follows: Get the queue name: name it with the prefix of "queue:" such as "queue:my-queue". Use the LPOP command: Eject the element from the head of the queue and return its value, such as LPOP queue:my-queue. Processing empty queues: If the queue is empty, LPOP returns nil, and you can check whether the queue exists before reading the element.
