Premise: Because this article mainly focuses on using redis in thinkPHP5, there is no special explanation about the installation of redis, but here is a little reminder, after installing redis Be sure to enable the php.ini extension later, otherwise you will still be unable to use redis.

Configuration

1. Students who can use ThinkPHP5 all know that TinkPHP5 encapsulates the cache class. We only need to fill in the cache configuration items in the cache in /application/congfig.php It's ready to use (shown below).

2. From the /thinkphp/library/think/cache/driver/Redis.php file we can see that the redis cache encapsulated here can only use the string basic type of redis. If you want This will not work if you use composite data types such as hashes or queues.

Looking at the cache class/thinkphp/library/think/cache/Driver.php, you will find that the handler method will return a handle, so we can use all data types of redis as long as we obtain this handle where we use redis. , so you can add the gethandle method getHandler

	/**
     * 返回句柄對(duì)象，可執(zhí)行其它高級(jí)方法
     *
     * @access public
     * @return object
     */
    public function handler()
    {
        return $this->handler;
    }

	/*
    *  獲取句柄
    * @param  
    */
    public static function getHandler()
    {
        return self::init();
    }

redis use

string(string)# in /thinkphp/library/think/Cache.php

##Basic type, one key corresponds to one value.

A string type value can store up to 512MB

Illustration:

// 創(chuàng)建數(shù)據(jù)
$redis->set('key', 'value');// 獲取數(shù)據(jù)
$value = $redis->get('key');
echo $value . PHP_EOL;// 修改數(shù)據(jù)，與創(chuàng)建數(shù)據(jù)一致，即覆蓋數(shù)據(jù)
$redis->set('key', 'value2');
echo $redis->get('key') . PHP_EOL;// 追加數(shù)據(jù)
$redis->append('key', '_value2');
echo $redis->get('key') . PHP_EOL;// 刪除數(shù)據(jù)
$redis->del('key');
// $redis->delete('key');
var_dump($redis->get('key'));// 創(chuàng)建數(shù)據(jù)，帶有效期
$redis->set('timeout_key', 'timeout_value', 5);
$redis->setex('timeout_key', 5, 'timeout_value');
// 獲取數(shù)據(jù)的有效期
echo $redis->ttl('timeout_key') . PHP_EOL;// 判斷是否已經(jīng)寫入，未寫入則寫入
$redis->set('unique_key', 'unique_value');
if (!$redis->setnx('unique_key', 'unique_value')) {
	echo $redis->get('unique_key') . PHP_EOL;
}// 批量創(chuàng)建
$multi = ['key1' => 'value1', 'key2' => 'value2', 'key3' => 'value3'];
$redis->mset($multi);// 批量獲取
$result = $redis->mget(array_keys($multi));
var_dump($result);

Hash(Hash)

Hash is a collection of key-value (key=>value) pairs; it is a mapping table of string type fields and values. Hash is particularly suitable for storing objects.

Each hash can store 2^32 -1 key-value pairs (more than 4 billion)

Illustration:

// 創(chuàng)建 hash 表
// 向名字叫 'hash' 的 hash表 中添加元素 ['key1' => 'val1']
$redis->hSet('hash', 'key1', 'val1');// 獲取 hash表 中鍵名是 key1 的值
echo $redis->hGet('hash', 'key1') . PHP_EOL;// 獲取 hash表的元素個(gè)數(shù)
echo $redis->hLen('hash') . PHP_EOL;// 獲取 hash表 中所有的鍵
$keys = $redis->hKeys('hash');
var_dump($keys);// 獲取 hash表 中所有的值
$vals = $redis->hVals('hash');
var_dump($vals);// 獲取 hash表 中所有的鍵值對(duì)
// 不推薦使用這種方法獲取全部數(shù)據(jù)，會(huì)導(dǎo)致服務(wù)器執(zhí)行超時(shí)，推薦方法后邊會(huì)詳細(xì)介紹
// $all = $redis->hGetAll('hash');
// var_dump($all);// 判斷 hash 表中是否存在鍵名是 key2 的元素
$bool = $redis->hExists('hash', 'key2');
echo $bool ? '存在' : '不存在' . PHP_EOL;// 批量添加元素
$redis->hMset('hash', ['key2' => 'val2', 'key3' => 'val3']);// 批量獲取元素
$hashes = $redis->hMGet('hash', ['key1', 'key2', 'key3']);
var_dump($hashes);// 刪除 hash表
$redis->del('hash');

List( List)

A list is a simple list of strings, sorted in insertion order. You can add an element to the head (left) or tail (right) of the list. List types are commonly used in messaging queue services to facilitate message exchange between multiple programs. Each list can store up to about 4 billion elements, or 2^32-1 elements.

Illustration:

// 向隊(duì)列左側(cè)加入元素
$redis->lPush('lists', 'X');
$redis->lPush('lists', 'X');
// 向隊(duì)列右側(cè)加入元素
$redis->rPush('lists', 'Z');// 將索引為1的數(shù)據(jù)修改為 Y
$redis->lSet('lists', 1, 'Y');// 獲取 list 長度
$length = $redis->lLen('lists');
echo $length;// 遍歷 list
$lists = $redis->lRange('lists', 0, $length - 1);
dump($lists);// 從左側(cè)出隊(duì)一個(gè)元素（獲取并刪除）
$x = $redis->lPop('lists');
echo $x . PHP_EOL;
// 從右側(cè)出隊(duì)一個(gè)元素（獲取并刪除）
$z = $redis->rPop('lists');
echo $z . PHP_EOL;// 獲取左側(cè)第一個(gè)元素
$y = $redis->lIndex('lists', 0);
echo $y . PHP_EOL;// 刪除隊(duì)列
$redis->del('lists');

Set (set)

Redis’ Set is an unordered collection of string type.

Like lists, the efficiency is very high when performing insertion and deletion and determining whether an element exists.

The biggest advantage of sets is that they can perform intersection, union, and difference operations.

The maximum number of elements that a Set can contain is 4294967295 (more than 4 billion).

Sets are implemented through hash tables, so the complexity of adding, deleting, and searching is O(1).

Illustration:

// 創(chuàng)建集合
$redis->sAdd('sets', 'value1', 'value2');
// 以數(shù)組形式創(chuàng)建集合
$redis->sAddArray('sets2', ['value1', 'value2', 'value3']);// 取兩個(gè)集合的并集
$union = $redis->sUnion('sets', 'sets2');
// 取兩個(gè)集合的差集
$diff = $redis->sDiff('sets', 'sets2');
// 取兩個(gè)集合的交集
$inter = $redis->sInter('sets', 'sets2');var_dump($union, $diff, $inter);// 獲取集合數(shù)量
$card = $redis->sCard('sets');
echo $card . PHP_EOL;// 獲取集合中全部元素
// 不推薦使用這種方法獲取全部數(shù)據(jù)，會(huì)導(dǎo)致服務(wù)器執(zhí)行超時(shí)，推薦方法后邊會(huì)詳細(xì)介紹
$sets = $redis->sMembers('sets');
var_dump($sets);// 判斷元素是否是集合中的成員
$isMember = $redis->sIsMember('sets', 'value2');
var_dump($isMember);// 刪除集合中的元素
$redis->sRem('sets', 'value2');
var_dump($redis->sMembers('sets'));// 隨機(jī)獲取一個(gè)元素
echo $redis->sRandMember('sets');// 隨機(jī)獲取一個(gè)元素并從集合中刪除
echo $redis->sPop('sets');// 刪除集合
$redis->del('sets', 'sets2');

zset (ordered set)

Redis zset is also a collection of string type elements like set, and does not Duplicate members are allowed.

The difference is that each element is associated with a double type score.

Redis uses scores to sort the members of the set from small to large.

// 添加成員
$redis->zAdd('zset', 95, '小明');
$redis->zAdd('zset', 99, '小剛');
$redis->zAdd('zset', 100, '小紅');// 統(tǒng)計(jì)成員個(gè)數(shù)
echo $redis->zCard('zset') . PHP_EOL;// 獲取某個(gè)成員的分?jǐn)?shù)
$score = $redis->zScore('zset', '小明');
echo $score . PHP_EOL;// 獲取某個(gè)成員的排名
$rank = $redis->zRank('zset', '小明'); // 從低到高排序的名次
$revRank = $redis->zRevRank('zset', '小明'); // 從高到低排序的名次
echo $rank . PHP_EOL;
echo $revRank . PHP_EOL;// 給指定成員增加分?jǐn)?shù)
$redis->zIncrBy('zset', 1, '小明'); // 給小明加一分// 返回指定排名范圍的成員
$range = $redis->zRange('zset', 0, 9, true); // 返回分?jǐn)?shù)從低到高排序的前10名及分?jǐn)?shù)
$revRange = $redis-> zRevRange('zset', 0, 9, true); // 返回分?jǐn)?shù)從高到低排序的前10名及分?jǐn)?shù)
var_dump($range);
var_dump($revRange);// 刪除成員
$redis->zRem('zet', '小明');// 返回指定分?jǐn)?shù)范圍的成員
$rangeByScore = $redis->zRangeByScore('zet', 98, 100); // 返回指定分?jǐn)?shù)范圍內(nèi)從低到高排序的成員
$revRangeByScore = $redis->zRevRangeByScore('zet', 98, 100); // 返回指定分?jǐn)?shù)范圍內(nèi)從高到低排序的成員
var_dump($rangeByScore);
var_dump($revRangeByScore);

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