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30 code examples of commonly used methods for operating redis in PHP
- 不言Original
- 2018-04-08 09:53:351782browse
This article mainly introduces 30 code examples of common methods for operating redis in PHP. This article actually has more than 30 methods, which can operate string type, list type and set type data. Friends in need can refer to it
There are many redis operations. I saw a relatively comprehensive blog before, but I can’t find it now. After searching for a long time, I will summarize some examples of PHP processing redis. I personally think some examples are commonly used. The following examples are all based on the php-redis extension.
1, connect
Description: The instance is connected to a Redis.
Parameters: host: string, port: int
Return value: BOOL Successfully returned : TRUE; Failure returns: FALSE
Example:
Copy code The code is as follows:
<?php $redis = new redis(); $result = $redis->connect('127.0.0.1', 6379); var_dump($result); //结果：bool(true) ?>
2,set
Description: Set the value of key and value
Parameter: Key Value
Return value: BOOL Successful return: TRUE; Failure return: FALSE
Example:
Copy code The code is as follows:
<?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
Description: Get the value of the specified key
parameters :key
Return value: string or BOOL If the key does not exist, return FALSE. Otherwise, return the value corresponding to the specified key.
Example:
Copy code The code is as follows:
<?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
Description: Delete the specified key
Parameters: a key, or an undetermined number of parameters, an array for each key: key1 key2 key3 ... keyN
Return value: the number of items deleted
Example:
Copy code The code is as follows:
<?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
Description: If in the database The key does not exist in, set the key value parameter
Parameter: key value
Return value: BOOL Successful return: TRUE; Failure return: FALSE
Example:
Copy code The code is as follows:
<?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
Description: Verify whether the specified key exists
Parameter key
Return Value: Bool Successful return: TRUE; Failure return: FALSE
Example:
Copy code The code is as follows:
<?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
Description: Store key value key in numerical increment.
Parameters: key value: The value that will be added to the key
Return value: INT the new value
Example:
Copy code The code is as follows:
<?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
Description : Store key value in numerical decrement.
Parameters: key value: the value that will be added to the key
Return value: INT the new value
Example:
Copy code The code is as follows:
<?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
Description: Get the values of all specified keys. If one or more keys do not exist, the value of that key in the array is false
Parameters: Array of lists containing the values of the keys
Return value: Returns an array containing the values of all keys
Example:
Copy code The code is as follows:
<?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
Description: By Add a string value to the head 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: Returns the array length if successful, false if failed
Example:
##Copy code The code is as follows:
<?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
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: Returns the array length if successful, false if failed
Example:
The code is as follows:<?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)
?>
Description: Return and remove the first element of the list
Parameter: keyReturn value: Return successfully The value of the first element, returns false on failure
Example:
The code is as follows:<?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"
?>
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.
Parameter: KeyReturn value: Return the array length if successful, false if failed
Example:
##Copy code
<?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
范例：
复制代码 代码如下:
<?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
范例：
复制代码 代码如下:
<?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
范例：
复制代码 代码如下:
<?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
范例：
复制代码 代码如下:
<?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
范例：
复制代码 代码如下:
<?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
范例：
复制代码 代码如下:
<?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
范例
复制代码 代码如下:
<?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
范例：
复制代码 代码如下:
<?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
范例：
复制代码 代码如下:
<?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
范例：
复制代码 代码如下:
<?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
范例：
复制代码 代码如下:
<?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
范例:
复制代码 代码如下:
<?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
范例：
复制代码 代码如下:
<?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
范例:
复制代码 代码如下:
<?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
范例：
复制代码 代码如下:
<?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
范例：
复制代码 代码如下:
<?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.
范例：
复制代码 代码如下:
<?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 )
?>
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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