Redis is an open source log-type Key-Value database written in ANSI C language, supports network, can be memory-based and persistent, and provides APIs in multiple languages.
The data types supported by Redis are Stirng(string), List(list), Hash(dictionary), Set(set), Sorted Set(ordered set);
To make PHP use redis, you must first Install redis extension.
1. Install redis
git download address
https://github.com/MSOpenTech/redis/releases
2. Test redis
Run windows (shortcut key: Windows key R key), enter the [cmd] command to enter the DOC operating system window;
Enter the redis installation directory and use the command
2.1 Start the redis daemon (enter the redis installation directory)
redis-server.exe redis-windows-conf
2.2 Enter the redis client (enter the redis installation directory)
redis-cli.exe
3. Install the redis extension of php
Download address
https: //pecl.php.net/package/redis
Select the appropriate redis expansion compression package based on phpinfo() information
4. The two files php_redis.dll and php_redis.pdb of the redis expansion package are placed in the ext folder
5. Modify the php.ini file
extension=php_redis.dll
6. Verify whether the redis extension is enabled
View phpinfo() information, search for redis
7.php connection and test the redis database (remember to enable the redis service)
New test.php
<?php $redis = new Redis(); $redis->connect('127.0.0.1',6379); $redis->set('name','klc'); echo $redis->get('name'); ?>
Operations on data types
Strng (string):
<?php // 设置一个字符串的值 $redis->set('cat', 111); //获取一个字符串的值 echo $redis->get('cat'); // 111 // 重复set $redis->set('cat', 222); echo $redis->get('cat'); // 222
List(List):
//列表 //存储数据到列表中 $redis->lpush('list', 'html'); $redis->lpush('list', 'css'); $redis->lpush('list', 'php'); //获取列表中所有的值 $list = $redis->lrange('list', 0, -1); print_r($list);echo '<br>'; //从右侧加入一个 $redis->rpush('list', 'mysql'); $list = $redis->lrange('list', 0, -1); print_r($list);echo '<br>'; //从左侧弹出一个 $redis->lpop('list'); $list = $redis->lrange('list', 0, -1); print_r($list);echo '<br>'; //从右侧弹出一个 $redis->rpop('list'); $list = $redis->lrange('list', 0, -1); print_r($list);echo '<br>'; // 结果 // Array ( [0] => php [1] => css [2] => html ) // Array ( [0] => php [1] => css [2] => html [3] => mysql ) // Array ( [0] => css [1] => html [2] => mysql ) // Array ( [0] => css [1] => html )
<?php //实例化redis $redis = new Redis(); //连接 $redis->connect('127.0.0.1', 6379); //列表 //存储数据到列表中 $redis->lpush('list', 'html'); $redis->lpush('list', 'css'); $redis->lpush('list', 'php'); $redis->lpush('list', 'mysql'); $redis->lpush('list', 'javascript'); $redis->lpush('list', 'ajax'); //获取列表中所有的值 $list = $redis->lrange('list', 0, -1); print_r($list);echo '<br>'; //获取列表的长度 $length = $redis->lsize('list'); echo $length;echo '<br>'; //返回列表key中index位置的值 echo $redis->lget('list', 2);echo '<br>'; echo $redis->lindex('list', 2);echo '<br>'; //设置列表中index位置的值 echo $redis->lset('list', 2, 'linux');echo '<br>'; $list = $redis->lrange('list', 0, -1); print_r($list);echo '<br>'; //返回key中从start到end位置间的元素 $list = $redis->lrange('list', 0, 2); print_r($list);echo '<br>'; $list = $redis->lgetrange('list', 0, 2); print_r($list);echo '<br>'; //截取链表中start到end的元素 //截取列表后列表发生变化,列表保留截取的元素,其余的删除 $list = $redis->ltrim('list', 0, 1); print_r($list);echo '<br>'; $list = $redis->lrange('list', 0, -1); print_r($list);echo '<br>'; // 结果 // Array ( [0] => ajax [1] => javascript [2] => mysql [3] => php [4] => css [5] => html ) // 6 // mysql // mysql // 1 // Array ( [0] => ajax [1] => javascript [2] => linux [3] => php [4] => css [5] => html ) // Array ( [0] => ajax [1] => javascript [2] => linux ) // Array ( [0] => ajax [1] => javascript [2] => linux ) // 1 // Array ( [0] => ajax [1] => javascript )
<?php //实例化redis $redis = new Redis(); //连接 $redis->connect('127.0.0.1', 6379); //列表 //存储数据到列表中 $redis->lpush('list', 'html'); $redis->lpush('list', 'html'); $redis->lpush('list', 'html'); $redis->lpush('list', 'css'); $redis->lpush('list', 'php'); $redis->lpush('list', 'mysql'); $redis->lpush('list', 'javascript'); $redis->lpush('list', 'html'); $redis->lpush('list', 'html'); $redis->lpush('list', 'html'); $redis->lpush('list', 'ajax'); //获取列表中所有的值 $list = $redis->lrange('list', 0, -1); print_r($list);echo '<br>'; //删除列表中count个值为value的元素 //从左向右删 $redis->lrem('list', 'html', 2); $list = $redis->lrange('list', 0, -1); print_r($list);echo '<br>'; //从右向左删 $redis->lrem('list', 'html', -2); $list = $redis->lrange('list', 0, -1); print_r($list);echo '<br>'; //删除所有 $redis->lrem('list', 'html', 0); $list = $redis->lrange('list', 0, -1); print_r($list);echo '<br>'; // 结果 // Array ( [0] => ajax [1] => html [2] => html [3] => html [4] => javascript [5] => mysql [6] => php [7] => css [8] => html [9] => html [10] => html ) // Array ( [0] => ajax [1] => html [2] => javascript [3] => mysql [4] => php [5] => css [6] => html [7] => html [8] => html ) // Array ( [0] => ajax [1] => html [2] => javascript [3] => mysql [4] => php [5] => css [6] => html ) // Array ( [0] => ajax [1] => javascript [2] => mysql [3] => php [4] => css )
Hash(Dictionary):
<?php //实例化redis $redis = new Redis(); //连接 $redis->connect('127.0.0.1', 6379); //字典 //给hash表中某个key设置value //如果没有则设置成功,返回1,如果存在会替换原有的值,返回0,失败返回0 echo $redis->hset('hash', 'cat', 'cat');echo '<br>'; echo $redis->hset('hash', 'cat', 'cat');echo '<br>'; echo $redis->hset('hash', 'cat', 'cat1');echo '<br>'; echo $redis->hset('hash', 'dog', 'dog');echo '<br>'; echo $redis->hset('hash', 'bird', 'bird');echo '<br>'; echo $redis->hset('hash', 'monkey', 'monkey');echo '<br>'; //获取hash中某个key的值 echo $redis->hget('hash', 'cat');echo '<br>'; //获取hash中所有的keys $arr = $redis->hkeys('hash'); print_r($arr);echo '<br>'; //获取hash中所有的值 顺序是随机的 $arr = $redis->hvals('hash'); print_r($arr);echo '<br>'; //获取一个hash中所有的key和value 顺序是随机的 $arr = $redis->hgetall('hash'); print_r($arr);echo '<br>'; //获取hash中key的数量 echo $redis->hlen('hash');echo '<br>'; //删除hash中一个key 如果表不存在或key不存在则返回false echo $redis->hdel('hash', 'dog');echo '<br>'; var_dump($redis->hdel('hash', 'rabbit'));echo '<br>'; // 结果 // 1 // 0 // 0 // 1 // 1 // 1 // cat1 // Array ( [0] => cat [1] => dog [2] => bird [3] => monkey ) // Array ( [0] => cat1 [1] => dog [2] => bird [3] => monkey ) // Array ( [cat] => cat1 [dog] => dog [bird] => bird [monkey] => monkey ) // 4 // 1 // int(0) <?php //实例化redis $redis = new Redis(); //连接 $redis->connect('127.0.0.1', 6379); //字典 //批量设置多个key的值 $arr = [1=>1, 2=>2, 3=>3, 4=>4, 5=>5]; $redis->hmset('hash', $arr); print_r($redis->hgetall('hash'));echo '<br>'; // 批量获得额多个key的值 $arr = [1, 2, 3, 5]; $hash = $redis->hmget('hash', $arr); print_r($hash);echo '<br>'; //检测hash中某个key知否存在 echo $redis->hexists('hash', '1');echo '<br>'; var_dump($redis->hexists('hash', 'cat'));echo '<br>'; print_r($redis->hgetall('hash'));echo '<br>'; //给hash表中key增加一个整数值 $redis->hincrby('hash', '1', 1); print_r($redis->hgetall('hash'));echo '<br>'; //给hash中的某个key增加一个浮点值 $redis->hincrbyfloat('hash', 2, 1.3); print_r($redis->hgetall('hash'));echo '<br>'; //结果 // Array ( [1] => 1 [2] => 2 [3] => 3 [4] => 4 [5] => 5 ) // Array ( [1] => 1 [2] => 2 [3] => 3 [5] => 5 ) // 1 // bool(false) // Array ( [1] => 1 [2] => 2 [3] => 3 [4] => 4 [5] => 5 ) // Array ( [1] => 2 [2] => 2 [3] => 3 [4] => 4 [5] => 5 ) // Array ( [1] => 2 [2] => 3.3 [3] => 3 [4] => 4 [5] => 5 )
Set(set):
<?php //实例化redis $redis = new Redis(); //连接 $redis->connect('127.0.0.1', 6379); //集合 // 添加一个元素 echo $redis->sadd('set', 'cat');echo '<br>'; echo $redis->sadd('set', 'cat');echo '<br>'; echo $redis->sadd('set', 'dog');echo '<br>'; echo $redis->sadd('set', 'rabbit');echo '<br>'; echo $redis->sadd('set', 'bear');echo '<br>'; echo $redis->sadd('set', 'horse');echo '<br>'; // 查看集合中所有的元素 $set = $redis->smembers('set'); print_r($set);echo '<br>'; //删除集合中的value echo $redis->srem('set', 'cat');echo '<br>'; var_dump($redis->srem('set', 'bird'));echo '<br>'; $set = $redis->smembers('set'); print_r($set);echo '<br>'; //判断元素是否是set的成员 var_dump($redis->sismember('set', 'dog'));echo '<br>'; var_dump($redis->sismember('set', 'bird'));echo '<br>'; //查看集合中成员的数量 echo $redis->scard('set');echo '<br>'; //移除并返回集合中的一个随机元素(返回被移除的元素) echo $redis->spop('set');echo '<br>'; print_r($redis->smembers('set'));echo '<br>'; // 结果 // 1 // 0 // 1 // 1 // 1 // 1 // Array ( [0] => rabbit [1] => cat [2] => bear [3] => dog [4] => horse ) // 1 // int(0) // Array ( [0] => dog [1] => rabbit [2] => horse [3] => bear ) // bool(true) // bool(false) // 4 // bear // Array ( [0] => dog [1] => rabbit [2] => horse )
<?php //实例化redis $redis = new Redis(); //连接 $redis->connect('127.0.0.1', 6379); //集合 $redis->sadd('set', 'horse'); $redis->sadd('set', 'cat'); $redis->sadd('set', 'dog'); $redis->sadd('set', 'bird'); $redis->sadd('set2', 'fish'); $redis->sadd('set2', 'dog'); $redis->sadd('set2', 'bird'); print_r($redis->smembers('set'));echo '<br>'; print_r($redis->smembers('set2'));echo '<br>'; //返回集合的交集 print_r($redis->sinter('set', 'set2'));echo '<br>'; //执行交集操作 并结果放到一个集合中 $redis->sinterstore('output', 'set', 'set2'); print_r($redis->smembers('output'));echo '<br>'; //返回集合的并集 print_r($redis->sunion('set', 'set2'));echo '<br>'; //执行并集操作 并结果放到一个集合中 $redis->sunionstore('output', 'set', 'set2'); print_r($redis->smembers('output'));echo '<br>'; //返回集合的差集 print_r($redis->sdiff('set', 'set2'));echo '<br>'; //执行差集操作 并结果放到一个集合中 $redis->sdiffstore('output', 'set', 'set2'); print_r($redis->smembers('output'));echo '<br>'; // 结果 // Array ( [0] => cat [1] => dog [2] => bird [3] => horse ) // Array ( [0] => bird [1] => dog [2] => fish ) // Array ( [0] => bird [1] => dog ) // Array ( [0] => dog [1] => bird ) // Array ( [0] => cat [1] => dog [2] => bird [3] => horse [4] => fish ) // Array ( [0] => cat [1] => dog [2] => bird [3] => horse [4] => fish ) // Array ( [0] => horse [1] => cat ) // Array ( [0] => horse [1] => cat )
Sorted Set (ordered set):
<?php //实例化redis $redis = new Redis(); //连接 $redis->connect('127.0.0.1', 6379); //有序集合 //添加元素 echo $redis->zadd('set', 1, 'cat');echo '<br>'; echo $redis->zadd('set', 2, 'dog');echo '<br>'; echo $redis->zadd('set', 3, 'fish');echo '<br>'; echo $redis->zadd('set', 4, 'dog');echo '<br>'; echo $redis->zadd('set', 4, 'bird');echo '<br>'; //返回集合中的所有元素 print_r($redis->zrange('set', 0, -1));echo '<br>'; print_r($redis->zrange('set', 0, -1, true));echo '<br>'; //返回元素的score值 echo $redis->zscore('set', 'dog');echo '<br>'; //返回存储的个数 echo $redis->zcard('set');echo '<br>'; //删除指定成员 $redis->zrem('set', 'cat'); print_r($redis->zrange('set', 0, -1));echo '<br>'; //返回集合中介于min和max之间的值的个数 print_r($redis->zcount('set', 3, 5));echo '<br>'; //返回有序集合中score介于min和max之间的值 print_r($redis->zrangebyscore('set', 3, 5));echo '<br>'; print_r($redis->zrangebyscore('set', 3, 5, ['withscores'=>true]));echo '<br>'; //返回集合中指定区间内所有的值 print_r($redis->zrevrange('set', 1, 2));echo '<br>'; print_r($redis->zrevrange('set', 1, 2, true));echo '<br>'; //有序集合中指定值的socre增加 echo $redis->zscore('set', 'dog');echo '<br>'; $redis->zincrby('set', 2, 'dog'); echo $redis->zscore('set', 'dog');echo '<br>'; //移除score值介于min和max之间的元素 print_r($redis->zrange('set', 0, -1, true));echo '<br>'; print_r($redis->zremrangebyscore('set', 3, 4));echo '<br>'; print_r($redis->zrange('set', 0, -1, true));echo '<br>'; //结果 // 1 // 0 // 0 // 0 // 0 // Array ( [0] => cat [1] => fish [2] => bird [3] => dog ) // Array ( [cat] => 1 [fish] => 3 [bird] => 4 [dog] => 4 ) // 4 // 4 // Array ( [0] => fish [1] => bird [2] => dog ) // 3 // Array ( [0] => fish [1] => bird [2] => dog ) // Array ( [fish] => 3 [bird] => 4 [dog] => 4 ) // Array ( [0] => bird [1] => fish ) // Array ( [bird] => 4 [fish] => 3 ) // 4 // 6 // Array ( [fish] => 3 [bird] => 4 [dog] => 6 ) // 2 // Array ( [dog] => 6 )
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