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This article introduces the relevant knowledge of "what are the common methods for php to operate redis". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

1,connect

Description: the instance is connected to a Redis.

Parameter: host: string,port: int

Return value: BOOL successful return: TRUE; failed return: FALSE

Example:

The copy code is as follows:

2,set

Description: set values for key and value

Parameter: Key Value

Return value: BOOL successful return: TRUE; failed return: FALSE

Example:

The copy code is as follows:

3,get

Description: gets the value about the specified key

Parameter: key

Return value: string or BOOL returns FALSE if the key does not exist. Otherwise, the value corresponding to the specified key is returned.

Example:

The copy code is as follows:

4,delete

Description: delete the specified key

Parameters: a key, or an uncertain number of parameters, each key array: key1 key2 key3... KeyN

Return value: number of items deleted

Example:

The copy code is as follows:

5,setnx

Description: if the key does not exist in the database, set the key parameter

Parameter: key value

Return value: BOOL successful return: TRUE; failed return: FALSE

Example:

The copy code is as follows:

6,exists

Description: verify that the specified key exists

Parameter key

Return value: Bool successful return: TRUE; failed return: FALSE

Example:

The copy code is as follows:

7,incr

Description: numerically incremented storage key value key.

Parameter: key value: the value to be added to the key

Return value: INT the new value

Example:

The copy code is as follows:

8,decr

Description: digitally decreasing stores key values.

Parameter: key value: the value to be added to the key

Return value: INT the new value

Example:

The copy code is as follows:

9,getMultiple

Description: gets the values of all specified keys. If one or more keys do not exist, the value of the key in the array is false

Parameters: a list array containing key values

Return value: returns an array of values for all keys

Example:

The copy code is as follows:

10,lpush

Description: add a string value from the header of the list. If the key does not exist, the list is created. If the key exists and it is not a list, return FALSE.

Parameter: key,value

Return value: array length returned successfully, false failed

Example:

The copy code is as follows:

11,rpush

Description: a string value is added at the end of the list. If the key does not exist, the list is created. If the key exists and it is not a list, return FALSE.

Parameter: key,value

Return value: array length returned successfully, false failed

Example:

The copy code is as follows:

12,lpop

Description: returns and removes the first element of the list

Parameter: key

Return value: the value of the first element is returned successfully, and false is returned for failure.

Example:

The copy code is as follows:

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, the command returns FALSE.

Parameter: Key

Return value: array length returned successfully, false failed

Example:

The copy code is as follows:

14,lget

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

Parameter: key index

Return value: the value of the specified element was returned successfully, but failed false

Example:

The copy code is as follows:

15,lset

Description: assigns a new value to the index specified in the list, and returns false if it does not exist.

Parameter: key index value

Return value: true for success, false for failure

Example:

The copy code is as follows:

16,lgetrange

Description:

Returns the specified element, lGetRange (key, start, end), stored from start to end in the list of specified keys in this area. 0 the first element, 1 the second element. The last element of-1, the penultimate element of-2.

Parameter: key start end

Return value: the searched value was returned successfully, but failed false

Example:

The copy code is as follows:

17,lremove

Description: removes count matching values from the list from the header. If count is zero, all matching elements are deleted. If count is negative, the content is deleted from the tail.

Parameter: key count value

Return value: the number of deletions returned successfully, but failed false

Example:

The copy code is as follows:

18,sadd

Description: add a value to a Key. If the value is already in the Key, FALSE is returned.

Parameter: key value

Return value: true for success, false for failure

Example:

The copy code is as follows:

19,sremove

Description: delete the value specified in Key

Parameter: key member

Return value: true or false

Example:

The copy code is as follows:

20,smove

Description: move value from Key1 to Key2

Parameter: srcKey dstKey member

Return value: true or false

Example

The copy code is as follows:

21,scontains

Description: checks whether the specified value exists in the collection.

Parameter: key value

Return value: true or false

Example:

The copy code is as follows:

22,ssize

Description: returns the number of values stored in the collection

Parameter: key

Return value: number of arrays returned successfully, failed 0

Example:

The copy code is as follows:

23,spop

Description: randomly removes and returns a value in key

Parameter: key

Return value: the deleted value was returned successfully, but failed false

Example:

The copy code is as follows:

24,sinter

Description: returns an intersection of all specified keys. If only one key is specified, this command generates members of the collection. Returns FALSE if a key does not exist.

Parameters: key1, key2, keyN

Return value: array intersection is returned successfully, false is failed

Example:

The copy code is as follows:

25,sinterstore

Description: execute the sInter command and store the results in the newly created variable.

Parameters:

Key: dstkey, the key to store the diff into.

Keys: key1, key2... KeyN. Key1..keyN are intersected as in sInter.

Return value: successful return, number of intersections, failed false

Example:

The copy code is as follows:

26,sunion

Description:

Returns a union of all specified keys

Parameters:

Keys: key1, key2, … , keyN

Return value: the merged set was returned successfully, but failed false

Example:

The copy code is as follows:

27,sunionstore

Description: execute the sunion command and store the results in the newly created variable.

Parameters:

Key: dstkey, the key to store the diff into.

Keys: key1, key2... KeyN. Key1..keyN are intersected as in sInter.

Return value: successful return, number of intersections, failed false

Example:

The copy code is as follows:

28,sdiff

Description: returns results that exist in the first collection and do not exist in all other collections

Parameter: Keys: key1, key2, … , keyN: Any number of keys corresponding to sets in redis.

Return value: array returned successfully, false failed

Example:

The copy code is as follows:

29,sdiffstore

Description: execute the sdiff command and store the results in the newly created variable.

Parameters:

Key: dstkey, the key to store the diff into.

Keys: key1, key2, … , keyN: Any number of keys corresponding to sets in redis

Return value: number returned successfully, false failed

Example:

The copy code is as follows:

30,smembers, sgetmembers

Description:

Returns the contents of the collection

Parameter: Key: key

Return value: An array of elements, the contents of the set.

Example:

The copy code is as follows:

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