redis 的set数据类型详解编程语言

将一个或多个成员元素加入到集合中

2.SREM

SMEMBERS key-name item1 [item 2…]

移除集合中的一个或多个成员元素，不存在的成员元素会被忽略

3.SMEMBERS

SMEMBERS key-name

返回集合中的所有的成员。 不存在的集合 key 被视为空集合

4.SCARD

SCARD key-name

返回集合中元素的数量

 php示例

$redis = new redis(); 

$redis- connect(127.0.0.1, 6609); 

$redis- delete(set1); 

$redis- delete(set2); 

$redis - sAdd(set1,a,b,c,d,e); 

var_dump($redis - sMembers(set1)); 

echo " br/ "; 

//rem 

//结果 array(5) { [0]= string(1) "d" [1]= string(1) "a" [2]= string(1) "c" [3]= string(1) "b" [4]= string(1) "e" } 

var_dump($redis - sRem(set1,d,e)); 

echo " br/ "; 

//结果 int(2) 

var_dump($redis - sMembers(set1)); 

echo " br/ "; 

//结果 array(3) { [0]= string(1) "b" [1]= string(1) "c" [2]= string(1) "a" } 

var_dump($redis - sCard(set1)); 

echo " br/ "; 

//结果 int(3) 

5.SMOVE

SMOVE source-key dest-key item

将 item元素从 source-key集合移动到 dest-key 集合

成功移除返回1，否则返回0

 php示例

var_dump($redis - sMove(set1,set2,c)); 

echo " br/ "; 

//结果 bool(true) 

var_dump($redis - sMembers(set1)); 

echo " br/ "; 

//结果 array(2) { [0]= string(1) "b" [1]= string(1) "a" } 

var_dump($redis - sMembers(set2)); 

echo " br/ "; 

//结果 array(1) { [0]= string(1) "c" } 

6.SPOP

     SPOP key-name

随机移除集合中的一个元素

 php示例

//spop 

var_dump($redis - sPop(set1)); 

echo " br/ "; 

//结果 string(1) "a" 

var_dump($redis - sMembers(set1)); 

echo " br/ "; 

//结果 array(1) { [0]= string(1) "b" } 

7.SISMEMBER

SMEMBERS key-name item

检测元素item是否存在与几何key-name中

 

 php示例

var_dump($redis - sMembers(set1)); 

//结果 array(2) { [0]= string(1) "b" [1]= string(1) "a" } 

var_dump($redis - sIsMember(set1,a)); 

echo " br/ "; 

//结果 bool(true) 

8.SRANDMEMBER

 SRANDMEMBER key-name [count]

从集合里面随机返回一个或多个元素

 php示例

//srandmember 

$redis- delete(set1); 

$redis - sAdd(set1,a,b,c,d,e); 

var_dump($redis - sRandMember(set1)); 

echo " br/ "; 

//结果 string(1) "b" 

var_dump($redis - sMembers(set1)); 

echo " br/ "; 

//结果 array(5) { [0]= string(1) "c" [1]= string(1) "b" [2]= string(1) "e" [3]= string(1) "a" [4]= string(1) "d" } 

var_dump($redis - sRandMember(set1,3)); 

echo " br/ "; 

//结果 array(3) { [0]= string(1) "c" [1]= string(1) "b" [2]= string(1) "d" } 

var_dump($redis - sMembers(set1)); 

echo " br/ "; 

//结果array(5) { [0]= string(1) "c" [1]= string(1) "b" [2]= string(1) "e" [3]= string(1) "a" [4]= string(1) "d" }

 9.SINTER

SINTER key-name [key-name1……]

返回给定所有给定集合的交集。 不存在的集合 key 被视为空集。 当给定集合当中有一个空集时，结果也为空集

10.SINTERSTORE

SINTERSTORE key-name [key-name1……]

将给定集合之间的交集存储在指定的集合中。如果指定的集合已经存在，则将其覆盖

 php示例

$redis- delete(set1); 

$redis- delete(set2); 

$redis - sAdd(set1,a,b,c,d,e); 

$redis - sAdd(set2,a,b,x,y,z); 

var_dump($redis - sMembers(set1)); 

echo " br/ "; 

//结果array(5) { [0]= string(1) "d" [1]= string(1) "a" [2]= string(1) "c" [3]= string(1) "b" [4]= string(1) "e" } 

var_dump($redis - sMembers(set2)); 

echo " br/ "; 

//结果array(5) { [0]= string(1) "y" [1]= string(1) "x" [2]= string(1) "a" [3]= string(1) "b" [4]= string(1) "z" } 

var_dump($redis - sInter(set1,set2)); 

echo " br/ "; 

//结果array(2) { [0]= string(1) "a" [1]= string(1) "b" } 

var_dump($redis - sInterStore(set-inter,set1,set2)); 

echo " br/ "; 

//int(2) 

var_dump($redis - sMembers(set-inter)); 

echo " br/ "; 

//结果array(2) { [0]= string(1) "a" [1]= string(1) "b" } 

 11.SUNION

SUNION key-name [key-name1……]

返回给定集合的并集。不存在的集合 key 被视为空集

 12.SUNIONSTORE

SUNIONSTORE  dest-key key-name [key-name1……]

将给定集合的并集存储在指定的集合 dest-key中

 php示例

$redis- delete(set1); 

$redis- delete(set2); 

$redis - sAdd(set1,a,b,c,d,e); 

$redis - sAdd(set2,a,b,x,y,z); 

var_dump($redis - sMembers(set1)); 

echo " br/ "; 

//结果array(5) { [0]= string(1) "d" [1]= string(1) "a" [2]= string(1) "c" [3]= string(1) "b" [4]= string(1) "e" } 

var_dump($redis - sMembers(set2)); 

echo " br/ "; 

//结果array(5) { [0]= string(1) "y" [1]= string(1) "x" [2]= string(1) "a" [3]= string(1) "b" [4]= string(1) "z" } 

var_dump($redis - sUnion(set1,set2)); 

echo " br/ "; 

//结果array(8) { [0]= string(1) "y" [1]= string(1) "z" [2]= string(1) "c" [3]= string(1) "b" [4]= string(1) "e" [5]= string(1) "x" [6]= string(1) "d" [7]= string(1) "a" } 

var_dump($redis - sUnionStore(set-union,set1,set2)); 

echo " br/ "; 

//int(8) 

var_dump($redis - sMembers(set-union)); 

echo " br/ "; 

//结果array(8) { [0]= string(1) "y" [1]= string(1) "z" [2]= string(1) "c" [3]= string(1) "b" [4]= string(1) "e" [5]= string(1) "x" [6]= string(1) "d" [7]= string(1) "a" } 

 13.SDIFF

SDIFF key-name [key-name1……]

返回给定集合之间的差集

14.SDIFFSTORE

SDIFF dest-key key-name [key-name1……]

将给定集合之间的差集存储在指定的集合dest-key中

 

 php示例

$redis- delete(set1); 

$redis- delete(set2); 

$redis - sAdd(set1,a,b,c,d,e); 

$redis - sAdd(set2,a,b,x,y,z); 

var_dump($redis - sMembers(set1)); 

echo " br/ "; 

//结果array(5) { [0]= string(1) "d" [1]= string(1) "a" [2]= string(1) "c" [3]= string(1) "b" [4]= string(1) "e" } 

var_dump($redis - sMembers(set2)); 

echo " br/ "; 

//结果array(5) { [0]= string(1) "y" [1]= string(1) "x" [2]= string(1) "a" [3]= string(1) "b" [4]= string(1) "z" } 

var_dump($redis - sDiff(set1,set2)); 

echo " br/ "; 

//结果array(3) { [0]= string(1) "d" [1]= string(1) "c" [2]= string(1) "e" } 

var_dump($redis - sDiffStore(set-diff,set1,set2)); 

echo " br/ "; 

//int(3) 

var_dump($redis - sMembers(set-diff)); 

echo " br/ "; 

//结果array(3) { [0]= string(1) "d" [1]= string(1) "c" [2]= string(1) "e" } 

sisMember

原创文章，作者：ItWorker，如若转载，请注明出处：https://blog.ytso.com/20396.html

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