redis常用例子
1、Redis php列表示例
//Connecting to Redis server on localhost $redis = new Redis ( ) ; $redis - > connect ( '127.0.0.1' , 6379 ) ; echo "Connection to server sucessfully" ; //store data in redis list $redis - > lpush ( "tutorial-list" , "Redis" ) ; $redis - > lpush ( "tutorial-list" , "Mongodb" ) ; $redis - > lpush ( "tutorial-list" , "Mysql" ) ; // Get the stored data and print it $arList = $redis - > lrange ( "tutorial-list" , 0 , 5 ) ; echo "Stored string in redis:: " ; print_r ( $arList ) ; ?>执行上面代码,将生成以下结果 -
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Connection to server sucessfully
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Stored string in redis::
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Redis
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Mongodb
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Mysql
2、Redis php键示例
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<?php
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//Connecting to Redis server on localhost
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$redis = new Redis();
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$redis->connect('127.0.0.1', 6379);
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echo "Connection to server sucessfully";
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// Get the stored keys and print it
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$arList = $redis->keys("*");
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echo "Stored keys in redis:: "
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print_r($arList);
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?>
执行上面代码,将生成以下结果 -
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Connection to server sucessfully
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Stored string in redis::
-
tutorial-name
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tutorial-list
3、描述:获取有关指定键的值
参数:key
返回值:string或BOOL 如果键不存在,则返回 FALSE。否则,返回指定键对应的value值。
范例:
-
<?php
-
$redis = new redis();
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$redis->connect('127.0.0.1', 6379);
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$result = $redis->get('test');
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var_dump($result); //结果:string(11) "11111111111"
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?>
4,delete
描述:删除指定的键
参数:一个键,或不确定数目的参数,每一个关键的数组:key1 key2 key3 … keyN
返回值:删除的项数
范例:
-
<?php
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$redis = new redis();
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$redis->connect('127.0.0.1', 6379);
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$redis->set('test',"1111111111111");
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echo $redis->get('test'); //结果:1111111111111
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$redis->delete('test');
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var_dump($redis->get('test')); //结果:bool(false)
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?>
5,setnx
描述:如果在数据库中不存在该键,设置关键值参数
参数:key value
返回值:BOOL 成功返回:TRUE;失败返回:FALSE
范例:
-
<?php
-
$redis = new redis();
-
$redis->connect('127.0.0.1', 6379);
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$redis->set('test',"1111111111111");
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$redis->setnx('test',"22222222");
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echo $redis->get('test'); //结果:1111111111111
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$redis->delete('test');
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$redis->setnx('test',"22222222");
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echo $redis->get('test'); //结果:22222222
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?>
6,exists
描述:验证指定的键是否存在
参数key
返回值:Bool 成功返回:TRUE;失败返回:FALSE
范例:
-
<?php
-
$redis = new redis();
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$redis->connect('127.0.0.1', 6379);
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$redis->set('test',"1111111111111");
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var_dump($redis->exists('test')); //结果:bool(true)
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?>
7,incr
描述:数字递增存储键值键.
参数:key value:将被添加到键的值
返回值:INT the new value
实例:
-
<?php
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$redis = new redis();
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$redis->connect('127.0.0.1', 6379);
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$redis->set('test',"123");
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var_dump($redis->incr("test")); //结果:int(124)
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var_dump($redis->incr("test")); //结果:int(125)
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?>
8,decr
描述:数字递减存储键值。
参数:key value:将被添加到键的值
返回值:INT the new value
实例:
-
<?php
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$redis = new redis();
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$redis->connect('127.0.0.1', 6379);
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$redis->set('test',"123");
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var_dump($redis->decr("test")); //结果:int(122)
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var_dump($redis->decr("test")); //结果:int(121)
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?>
9,getMultiple
描述:取得所有指定键的值。如果一个或多个键不存在,该数组中该键的值为假
参数:其中包含键值的列表数组
返回值:返回包含所有键的值的数组
实例:
-
<?php
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$redis = new redis();
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$redis->connect('127.0.0.1', 6379);
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$redis->set('test1',"1");
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$redis->set('test2',"2");
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$result = $redis->getMultiple(array('test1','test2'));
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print_r($result); //结果:Array ( [0] => 1 [1] => 2 )
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?>
10,lpush
描述:由列表头部添加字符串值。如果不存在该键则创建该列表。如果该键存在,而且不是一个列表,返回FALSE。
参数:key,value
返回值:成功返回数组长度,失败false
实例:
-
<?php
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$redis = new redis();
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$redis->connect('127.0.0.1', 6379);
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$redis->delete('test');
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var_dump($redis->lpush("test","111")); //结果:int(1)
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var_dump($redis->lpush("test","222")); //结果:int(2)
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?>
11,rpush
描述:由列表尾部添加字符串值。如果不存在该键则创建该列表。如果该键存在,而且不是一个列表,返回FALSE。
参数:key,value
返回值:成功返回数组长度,失败false
范例:
-
<?php
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$redis = new redis();
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$redis->connect('127.0.0.1', 6379);
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$redis->delete('test');
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var_dump($redis->lpush("test","111")); //结果:int(1)
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var_dump($redis->lpush("test","222")); //结果:int(2)
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var_dump($redis->rpush("test","333")); //结果:int(3)
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var_dump($redis->rpush("test","444")); //结果:int(4)
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?>
12,lpop
描述:返回和移除列表的第一个元素
参数:key
返回值:成功返回第一个元素的值 ,失败返回false
范例:
-
<?php
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$redis = new redis();
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$redis->connect('127.0.0.1', 6379);
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$redis->delete('test');
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$redis->lpush("test","111");
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$redis->lpush("test","222");
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$redis->rpush("test","333");
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$redis->rpush("test","444");
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var_dump($redis->lpop("test")); //结果:string(3) "222"
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?>
13,lsize,llen
描述:返回的列表的长度。如果列表不存在或为空,该命令返回0。如果该键不是列表,该命令返回FALSE。
参数:Key
返回值:成功返回数组长度,失败false
范例:
-
<?php
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$redis = new redis();
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$redis->connect('127.0.0.1', 6379);
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$redis->delete('test');
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$redis->lpush("test","111");
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$redis->lpush("test","222");
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$redis->rpush("test","333");
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$redis->rpush("test","444");
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var_dump($redis->lsize("test")); //结果:int(4)
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?>
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:
-
<?php
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$redis = new redis();
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$redis->connect('127.0.0.1', 6379);
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$redis->delete('test');
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$redis->lpush("test","111");
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$redis->lpush("test","222");
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$redis->rpush("test","333");
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$redis->rpush("test","444");
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var_dump($redis->lget("test",3)); //结果:string(3) "444"
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?>
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:
-
<?php
-
$redis = new redis();
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$redis->connect('127.0.0.1', 6379);
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$redis->delete('test');
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$redis->lpush("test","111");
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$redis->lpush("test","222");
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var_dump($redis->lget("test",1)); //结果:string(3) "111"
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var_dump($redis->lset("test",1,"333")); //结果:bool(true)
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var_dump($redis->lget("test",1)); //结果:string(3) "333"
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?>
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:
-
<?php
-
$redis = new redis();
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$redis->connect('127.0.0.1', 6379);
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$redis->delete('test');
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$redis->lpush("test","111");
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$redis->lpush("test","222");
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print_r($redis->lgetrange("test",0,-1)); //结果:Array ( [0] => 222 [1] => 111 )
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?>
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:
-
<?php
-
$redis = new redis();
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$redis->connect('127.0.0.1', 6379);
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$redis->delete('test');
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$redis->lpush('test','a');
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$redis->lpush('test','b');
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$redis->lpush('test','c');
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$redis->rpush('test','a');
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print_r($redis->lgetrange('test', 0, -1)); //结果:Array ( [0] => c [1] => b [2] => a [3] => a )
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var_dump($redis->lremove('test','a',2)); //结果:int(2)
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print_r($redis->lgetrange('test', 0, -1)); //结果:Array ( [0] => c [1] => b )
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?>
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:
-
<?php
-
$redis = new redis();
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$redis->connect('127.0.0.1', 6379);
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$redis->delete('test');
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var_dump($redis->sadd('test','111')); //结果:bool(true)
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var_dump($redis->sadd('test','333')); //结果:bool(true)
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print_r($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:
-
<?php
-
$redis = new redis();
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$redis->connect('127.0.0.1', 6379);
-
$redis->delete('test');
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$redis->sadd('test','111');
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$redis->sadd('test','333');
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$redis->sremove('test','111');
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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
-
<?php
-
$redis = new redis();
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$redis->connect('127.0.0.1', 6379);
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$redis->delete('test');
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$redis->delete('test1');
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$redis->sadd('test','111');
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$redis->sadd('test','333');
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$redis->sadd('test1','222');
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$redis->sadd('test1','444');
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$redis->smove('test',"test1",'111');
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print_r($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:
-
<?php
-
$redis = new redis();
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$redis->connect('127.0.0.1', 6379);
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$redis->delete('test');
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$redis->sadd('test','111');
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$redis->sadd('test','112');
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$redis->sadd('test','113');
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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:
-
<?php
-
$redis = new redis();
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$redis->connect('127.0.0.1', 6379);
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$redis->delete('test');
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$redis->sadd('test','111');
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$redis->sadd('test','112');
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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:
-
<?php
-
$redis = new redis();
-
$redis->connect('127.0.0.1', 6379);
-
$redis->delete('test');
-
$redis->sadd("test","111");
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$redis->sadd("test","222");
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$redis->sadd("test","333");
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var_dump($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:
-
<?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");
-
$redis->sadd("test1","444");
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var_dump($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:
-
<?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");
-
$redis->sadd("test1","444");
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var_dump($redis->sinterstore('new',"test","test1")); //结果:int(1)
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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:
-
<?php
-
$redis = new redis();
-
$redis->connect('127.0.0.1', 6379);
-
$redis->delete('test');
-
$redis->sadd("test","111");
-
$redis->sadd("test","222");
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$redis->sadd("test","333");
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$redis->sadd("test1","111");
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$redis->sadd("test1","444");
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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:
-
<?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)
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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:
-
<?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:
-
<?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:
-
<?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 )
-
?>
文章来源: markwcm.blog.csdn.net,作者:黄啊码,版权归原作者所有,如需转载,请联系作者。
原文链接:markwcm.blog.csdn.net/article/details/80301887
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