What are the common methods for operating redis in PHP?

php redis methods: connect(), set(), get(), delete(), setnx(), exists(), incr(), decr(), getMultiple(), lpush() , rpush(), lpop(), lget(), etc.

The operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

php Common methods for operating redis

1, connect

Description: The instance is connected to a Redis.

Parameters: host: string, port: int

Return value: BOOL Successful return: TRUE; Failure return: FALSE

Example:

connect('127.0.0.1', 6379); var_dump($result); //结果：bool(true) ?>

2,set

Description: Set the value of key and value

Parameter: Key Value

Return value: BOOL Success return: TRUE; Failure return: FALSE

Example:

connect('127.0.0.1', 6379); $result = $redis->set('test',"11111111111"); var_dump($result); //结果：bool(true) ?>

3,get

Description: Get the value related to the specified key

Parameters: key

Return value: string or BOOL Returns FALSE if the key does not exist. Otherwise, return the value corresponding to the specified key.

Example:

connect('127.0.0.1', 6379); $result = $redis->get('test'); var_dump($result); //结果：string(11) "11111111111" ?>

4,delete

Description: Delete the specified key

Parameters: a key, or undefined Number of parameters, array for each key: key1 key2 key3 ... keyN

Return value: Number of items deleted

Example:

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

Description: If it does not exist, set it. If it exists, do not change it.

Parameter: key value

Return value: BOOL Successful return: TRUE; Failure Return: FALSE

Example:

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

Description: Verify whether the specified key exists

Parameter key

Return value: Bool Successful return: TRUE; Failure return: FALSE

Example:

connect('127.0.0.1', 6379); $redis->set('test',"1111111111111"); var_dump($redis->exists('test')); //结果：bool(true) ?>

7, incr

Description: Numeric increment storage key value key.

Parameters: key value: The value that will be added to the key

Return value: INT the new value

Example:

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

Description: The key value is stored in numerical decrement.

Parameters: key value: the value that will be added to the key

Return value: INT the new value

Instance:

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

Description: Get the values of all specified keys. If one or more keys do not exist, the value of the key in the array is false, [the collection cannot be operated, otherwise it is false]

Parameters: a list array containing the key values

Return value: Returns an array containing the values of all keys

Example:

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

Description: By the head of the list Add string value. Create the list if the key does not exist. If the key exists and is not a list, return FALSE.

Parameters: key, value

Return value: Return the array length on success, false on failure

Instance:

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

Description: Add a string value from the end of the list. Create the list if the key does not exist. If the key exists and is not a list, return FALSE.

Parameters: key, value

Return value: Return the array length on success, false on failure

Example:

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

Description: Returns and removes the first element of the list

Parameters: key

Return value: Returns the value of the first element on success, on failure Return false

Example:

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

Description: The length of the returned list. If the list does not exist or is empty, the command returns 0. If the key is not a list, this command returns FALSE.

Parameters: Key

Return value: Return the array length on success, false on failure

Example:

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

Description: Returns the element with the specified key stored at the specified index in the list. 0 first element, 1 second... -1 last element, -2 second last... Returns FALSE if the wrong index or key does not point to the list.

Parameters: key index

Return value: Return the value of the specified element if successful, false if failed

Example:

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

Description: Assign a new value to the index specified in the list. If the index does not exist, return false.

Parameter: key index value

Return value: Return successfully true, failed false

Example:

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

Description:

Returns the specified key in the range Specified elements stored from start to end in the list [can print the entire list], lGetRange(key, start, end). 0 the first element, 1 the second element... -1 the last element, -2 the penultimate element...

Parameters: key start end

Return value: Successfully returns the value found , failed false

Example:

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

Description: Remove count matching values from the list starting from the head. If count is zero, all matching elements are removed. If count is negative, the content is deleted from the end.

Parameter: key count value

Return value: Return the number of deleted items if successful, false if failed

Example:

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

Description: Add a value to a Key. If this value is already in this Key, return FALSE.

Parameter: key value

返回值：成功返回true,失败false

范例：

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

范例：

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

范例

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

范例：

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

范例：

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[可实现随机抽奖功能]

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

范例：

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

范例：

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

范例:

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

范例：

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

范例:

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【排除第一个数组中，和后续数据重复的值】

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

范例：

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

范例：

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.

范例：

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，close

描述：释放资源

connect('127.0.0.1', 6379); $redis->close() ?>

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