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. Here are 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 Successful return: TRUE; Failure return: FALSE
Example:
connect('127.0.0.1', 6379);
var_dump($result); //结果：bool(true)
?>
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2, set
Description: Set key and value 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)
?>
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3, get
Description: Get the value for 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:
connect('127.0.0.1', 6379);
$result = $redis->get('test');
var_dump($result); //结果：string(11) "11111111111"
?>
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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)
?>
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5,setnx
Description: If the key does not exist in the database, set the key value parameter
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
?>
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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)
?>
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7, incr
Description: Numeric increment storage key.
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->incr("test")); //结果：int(124)
var_dump($redis->incr("test")); //结果：int(125)
?>Copy after login
8, decr
Description: The key value is stored numerically in descending order.
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)
?>Copy after login
9 , getMultiple
Description: Get the values of all specified keys. If one or more keys do not exist, the value of that key in this array is false
Parameters: Array of lists 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 )
?>
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10, lpush
Description: Add a string value from 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: 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)
?>Copy after login
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)
?>Copy after login
12, lpop
Description: Return and remove the first element of the list
Parameters: key
Return value: Return the first element successfully Value, returns 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->lpop("test")); //结果：string(3) "222"
?>Copy after login
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)
?>Copy after login
14 , lget
Description: Returns the specified element stored in the list with the specified key. 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.
Parameter: 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"
?>Copy after login
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: true on success, false on failure
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"
?>Copy after login
16, lgetrange
Description:
Returns the specified element stored from the beginning to the end of the specified key list in the area, 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 )
?>Copy after login
17,lremove
Description: Remove from the head of the list count matching values. 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 )
?>
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18, sadd
Description: Add a value to a Key. If this value is already in this Key, return FALSE.
Parameters: key value
Return value: true on success, false on failure
Example:
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 )
?>
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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 )
?>
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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 )
?>
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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)
?>
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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
?>
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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：
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"
?>Copy after login
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" }
?>Copy after login
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" }
?>Copy after login
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 )
?>Copy after login
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 )
?>Copy after login
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：
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 )
?>Copy after login
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 )
?>Copy after login
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 )
?>Copy after login
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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