string是redis最基本的類型，而且string類型是二進位安全的。意思是redis的string可以包含任何資料。例如jpg圖片或是序列化的物件
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis-><span class="hljs-built_in">set(<span class="hljs-string">'key',<span class="hljs-string">'TK'); </span></span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis-><span class="hljs-built_in">set(<span class="hljs-string">'number',<span class="hljs-string">'1'); </span></span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->setex(<span class="hljs-string">'key',<span class="hljs-number">5,<span class="hljs-string">'TK'); <span class="hljs-comment">//设置有效期为5秒的键值 </span></span></span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->psetex(<span class="hljs-string">'key',<span class="hljs-number">5000,<span class="hljs-string">'TK'); <span class="hljs-comment">//设置有效期为5000毫秒(同5秒)的键值 </span></span></span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->setnx(<span class="hljs-string">'key',<span class="hljs-string">'XK'); <span class="hljs-regexp">//若键值存在返回<span class="hljs-keyword">false 不存在返回<span class="hljs-keyword">true </span></span></span></span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->delete(<span class="hljs-string">'key'); 删除键值 可以传入数组 <span class="hljs-keyword">array(<span class="hljs-string">'key1',<span class="hljs-string">'key2')删除多个键 </span></span></span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->getSet(<span class="hljs-string">'key',<span class="hljs-string">'XK'); <span class="hljs-comment">//将键key的值设置为XK， 并返回这个键值原来的值TK </span></span></span></span></code></span>
<span style="font-size: 15px;"><code> <span class="hljs-variable">$ret = <span class="hljs-variable">$redis->multi() <span class="hljs-comment">//批量事务处理,不保证处理数据的原子性
->set(<span class="hljs-string">'key1', <span class="hljs-string">'val1')
->get(<span class="hljs-string">'key1')
->setnx(<span class="hljs-string">'key', <span class="hljs-string">'val2')
->get(<span class="hljs-string">'key2')
->exec();
</span></span></span></span></span></span></span></span></span></code></span><span style="font-size: 15px;"><code><span class="hljs-variable">$redis->watch(<span class="hljs-string">'key'); // 监控键key 是否被其他客户端修改
如果KEY在调用watch()和<span class="hljs-built_in">exec()之间被修改，<span class="hljs-built_in">exec失败
</span></span></span></span></code></span><span style="font-size: 15px;"><code><span class="hljs-function"><span class="hljs-keyword">function <span class="hljs-title">f<span class="hljs-params">(<span class="hljs-variable">$redis, <span class="hljs-variable">$chan, <span class="hljs-variable">$msg) { <span class="hljs-comment">//频道订阅
<span class="hljs-keyword">switch(<span class="hljs-variable">$chan) {
<span class="hljs-keyword">case <span class="hljs-string">'chan-1':
<span class="hljs-keyword">echo <span class="hljs-variable">$msg;
<span class="hljs-keyword">break;
<span class="hljs-keyword">case <span class="hljs-string">'chan-2':
<span class="hljs-keyword">echo <span class="hljs-variable">$msg;
<span class="hljs-keyword">break;
<span class="hljs-keyword">case <span class="hljs-string">'chan-2':
<span class="hljs-keyword">echo <span class="hljs-variable">$msg;
<span class="hljs-keyword">break;
}
}
<span class="hljs-variable">$redis->subscribe(<span class="hljs-keyword">array(<span class="hljs-string">'chan-1', <span class="hljs-string">'chan-2', <span class="hljs-string">'chan-3'), <span class="hljs-string">'f'); <span class="hljs-comment">// subscribe to 3 chans
<span class="hljs-variable">$redis->publish(<span class="hljs-string">'chan-1', <span class="hljs-string">'hello, world!'); <span class="hljs-comment">// send message.
</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></code></span><span style="font-size: 15px;"><code><span class="hljs-variable">$redis->exists(<span class="hljs-string">'key'); <span class="hljs-regexp">//验证键是否存在，存在返回<span class="hljs-keyword">true </span></span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->incr(<span class="hljs-string">'number'); <span class="hljs-comment">//键值加1 </span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->incrby(<span class="hljs-string">'number',-<span class="hljs-number">10); <span class="hljs-comment">//键值加减10 </span></span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->incrByFloat(<span class="hljs-string">'number', +/- <span class="hljs-number">1.5); <span class="hljs-comment">//键值加减小数 </span></span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->decr(<span class="hljs-string">'number'); <span class="hljs-comment">// 键值减1 </span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->decrBy(<span class="hljs-string">'number',<span class="hljs-number">10); <span class="hljs-comment">// 键值减10 </span></span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$mget = <span class="hljs-variable">$redis->mget(<span class="hljs-keyword">array(<span class="hljs-string">'number',<span class="hljs-string">'key')); <span class="hljs-comment">// 批量获取键值,返回一个数组 </span></span></span></span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->mset(<span class="hljs-keyword">array(<span class="hljs-string">'key0' => <span class="hljs-string">'value0', <span class="hljs-string">'key1' => <span class="hljs-string">'value1')); <span class="hljs-comment">// 批量设置键值 </span></span></span></span></span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->msetnx(<span class="hljs-keyword">array(<span class="hljs-string">'key0' => <span class="hljs-string">'value0', <span class="hljs-string">'key1' => <span class="hljs-string">'value1'));
<span class="hljs-comment">// 批量设置键值，类似将setnx()方法批量操作
</span></span></span></span></span></span></span></code></span><span style="font-size: 15px;"><code><span class="hljs-variable">$redis->append(<span class="hljs-string">'key', <span class="hljs-string">'-Smudge'); <span class="hljs-comment">//原键值TK，将值追加到键值后面，键值为TK-Smudge </span></span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->getRange(<span class="hljs-string">'key', <span class="hljs-number">0, <span class="hljs-number">5); <span class="hljs-comment">// 键值截取从0位置开始到5位置结束 </span></span></span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->getRange(<span class="hljs-string">'key', -<span class="hljs-number">6, -<span class="hljs-number">1); <span class="hljs-comment">// 字符串截取从-6(倒数第6位置)开始到-1(倒数第1位置)结束 </span></span></span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->setRange(<span class="hljs-string">'key', <span class="hljs-number">0, <span class="hljs-string">'Smudge');
<span class="hljs-comment">// 键值中替换字符串，0表示从0位置开始
有多少个字符替换多少位置，其中汉字占<span class="hljs-number">2个位置
</span></span></span></span></span></span></code></span><span style="font-size: 15px;"><code><span class="hljs-variable">$redis->strlen(<span class="hljs-string">'key'); <span class="hljs-comment">//键值长度 </span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->getBit(<span class="hljs-string">'key'); </span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis-><span class="hljs-built_in">setBit(<span class="hljs-string">'key'); </span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->delete(<span class="hljs-string">'list-key'); <span class="hljs-comment">// 删除链表 </span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->lPush(<span class="hljs-string">'list-key', <span class="hljs-string">'A'); <span class="hljs-comment">//插入链表头部/左侧，返回链表长度 </span></span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->rPush(<span class="hljs-string">'list-key', <span class="hljs-string">'B'); <span class="hljs-comment">//插入链表尾部/右侧，返回链表长度 </span></span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->lPushx(<span class="hljs-string">'list-key', <span class="hljs-string">'C');
<span class="hljs-comment">// 插入链表头部/左侧,链表不存在返回0，存在即插入成功，返回当前链表长度
</span></span></span></span></code></span><span style="font-size: 15px;"><code><span class="hljs-variable">$redis->rPushx(<span class="hljs-string">'list-key', <span class="hljs-string">'C');
<span class="hljs-comment">// 插入链表尾部/右侧,链表不存在返回0，存在即插入成功，返回当前链表长度
</span></span></span></span></code></span><span style="font-size: 15px;"><code><span class="hljs-variable">$redis->lPop(<span class="hljs-string">'list-key'); <span class="hljs-comment">//返回LIST顶部（左侧）的VALUE ,后入先出(栈) </span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->rPop(<span class="hljs-string">'list-key'); <span class="hljs-comment">//返回LIST尾部（右侧）的VALUE ,先入先出（队列） </span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->blPop(); </span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->brPop(); </span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->lSize(<span class="hljs-string">'list-key');
<span class="hljs-comment">// 如果是链表则返回链表长度，空链表返回0
若不是链表或者不为空，则返回<span class="hljs-keyword">false ,判断非链表 <span class="hljs-string">" === false "
</span></span></span></span></span></code></span><span style="font-size: 15px;"><code><span class="hljs-variable">$redis->lGet(<span class="hljs-string">'list-key',-<span class="hljs-number">1); <span class="hljs-comment">// 通过索引获取链表元素 0获取左侧一个 -1获取最后一个 </span></span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->lSet(<span class="hljs-string">'list-key', <span class="hljs-number">0, <span class="hljs-string">'X'); <span class="hljs-comment">//0位置元素替换为 X </span></span></span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->lRange(<span class="hljs-string">'list-key', <span class="hljs-number">0, <span class="hljs-number">3);
<span class="hljs-comment">//链表截取 从0开始 3位置结束 ，结束位置为-1 获取开始位置之后的全部
</span></span></span></span></span></code></span><span style="font-size: 15px;"><code><span class="hljs-variable">$redis->lTrim(<span class="hljs-string">'list-key', <span class="hljs-number">0, <span class="hljs-number">1); <span class="hljs-comment">// 截取链表(不可逆) 从0索引开始 1索引结束 </span></span></span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->lRem(<span class="hljs-string">'list-key', <span class="hljs-string">'C', <span class="hljs-number">2); <span class="hljs-comment">//链表从左开始删除元素2个C </span></span></span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->lInsert(<span class="hljs-string">'list-key', Redis::BEFORE, <span class="hljs-string">'C', <span class="hljs-string">'X');
<span class="hljs-comment">// 在C元素前面插入X , Redis::AfTER(表示后面插入)
链表不存在则插入失败 返回<span class="hljs-number">0 若元素不存在返回-<span class="hljs-number">1
</span></span></span></span></span></span></span></code></span><span style="font-size: 15px;"><code><span class="hljs-variable">$redis->rpoplpush(<span class="hljs-string">'list-key', <span class="hljs-string">'list-key2');
<span class="hljs-comment">//从源LIST的最后弹出一个元素
并且把这个元素从目标<span class="hljs-keyword">LIST的顶部（左侧）压入目标<span class="hljs-keyword">LIST。
</span></span></span></span></span></span></code></span><span style="font-size: 15px;"><code>
<span class="hljs-variable">$redis->brpoplpush();
<span class="hljs-comment">//rpoplpush的阻塞版本，这个版本有第三个参数用于设置阻塞时间
即如果源<span class="hljs-keyword">LIST为空，那么可以阻塞监听timeout的时间，如果有元素了则执行操作。
</span></span></span></code></span><span style="font-size: 15px;"><code><span class="hljs-keyword">set无序集合 不允许出现重复的元素 服务端可以实现多个 集合操作 </span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->sMembers(<span class="hljs-string">'key'); <span class="hljs-comment">//获取容器key中所有元素 </span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->sAdd(<span class="hljs-string">'key' , <span class="hljs-string">'TK');
<span class="hljs-regexp">// (从左侧插入,最后插入的元素在<span class="hljs-number">0位置),集合中已经存在<span class="hljs-constant">TK 则返回<span class="hljs-keyword">false
不存在添加成功 返回<span class="hljs-keyword">true
</span></span></span></span></span></span></span></span></code></span><span style="font-size: 15px;"><code><span class="hljs-variable">$redis->sRem(<span class="hljs-string">'key' , <span class="hljs-string">'TK'); <span class="hljs-comment">// 移除容器中的TK </span></span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->sMove(<span class="hljs-string">'key',<span class="hljs-string">'key1',<span class="hljs-string">'TK'); <span class="hljs-comment">//将容易key中的元素TK 移动到容器key1 操作成功返回TRUE </span></span></span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->sIsMember(<span class="hljs-string">'key',<span class="hljs-string">'TK'); <span class="hljs-comment">//检查VALUE是否是SET容器中的成员 </span></span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->sCard(<span class="hljs-string">'key'); <span class="hljs-comment">//返回SET容器的成员数 </span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->sPop(<span class="hljs-string">'key'); <span class="hljs-comment">//随机返回容器中一个元素，并移除该元素 </span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->sRandMember(<span class="hljs-string">'key');<span class="hljs-comment">//随机返回容器中一个元素，不移除该元素 </span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->sInter(<span class="hljs-string">'key',<span class="hljs-string">'key1');
<span class="hljs-comment">// 返回两个集合的交集 没有交集返回一个空数组，若参数只有一个集合，则返回集合对应的完整的数组
</span></span></span></span></code></span><span style="font-size: 15px;"><code><span class="hljs-variable">$redis->sInterStore(<span class="hljs-string">'store',<span class="hljs-string">'key',<span class="hljs-string">'key1'); <span class="hljs-comment">//将集合key和集合key1的交集 存入容器store 成功返回1 </span></span></span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->sUnion(<span class="hljs-string">'key',<span class="hljs-string">'key1'); <span class="hljs-comment">//集合key和集合key1的并集 注意即使多个集合有相同元素 只保留一个
<span class="hljs-variable">$redis->sUnionStore(<span class="hljs-string">'store',<span class="hljs-string">'key',<span class="hljs-string">'key1');
<span class="hljs-comment">//集合key和集合key1的并集保存在集合store中, 注意即使多个集合有相同元素 只保留一个
</span></span></span></span></span></span></span></span></span></code></span><span style="font-size: 15px;"><code><span class="hljs-variable">$redis->sDiff(<span class="hljs-string">'key',<span class="hljs-string">'key1',<span class="hljs-string">'key2'); <span class="hljs-comment">//返回数组，该数组元素是存在于key集合而不存在于集合key1 key2 </span></span></span></span></span></code></span>
**(stored set) 和set 一樣是字串的集合，不同的是每個元素都會關聯一個double 類型的score
redis的list類型其實就是一個每個子元素都是string類型的雙向鍊錶。 **
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->zAdd(<span class="hljs-string">'tkey', <span class="hljs-number">1, <span class="hljs-string">'A');
<span class="hljs-comment">// 插入集合tkey中，A元素关联一个分数，插入成功返回1
同时集合元素不可以重复, 如果元素已经存在返回 <span class="hljs-number">0
</span></span></span></span></span></span></code></span><span style="font-size: 15px;"><code><span class="hljs-variable">$redis->zRange(<span class="hljs-string">'tkey',<span class="hljs-number">0,-<span class="hljs-number">1); <span class="hljs-comment">// 获取集合元素，从0位置 到 -1 位置 </span></span></span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->zRange(<span class="hljs-string">'tkey',<span class="hljs-number">0,-<span class="hljs-number">1, <span class="hljs-keyword">true);
<span class="hljs-comment">// 获取集合元素，从0位置 到 -1 位置, 返回一个关联数组 带分数
<span class="hljs-keyword">array([A] => <span class="hljs-number">0.01,[B] => <span class="hljs-number">0.02,[D] => <span class="hljs-number">0.03) 其中小数来自zAdd方法第二个参数
</span></span></span></span></span></span></span></span></span></span></code></span><span style="font-size: 15px;"><code><span class="hljs-variable">$redis->zDelete(<span class="hljs-string">'tkey', <span class="hljs-string">'B'); <span class="hljs-comment">// 移除集合tkey中元素B 成功返回1 失败返回 0 </span></span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->zRevRange(<span class="hljs-string">'tkey', <span class="hljs-number">0, -<span class="hljs-number">1); <span class="hljs-comment">// 获取集合元素，从0位置 到 -1 位置，数组按照score降序处理
<span class="hljs-variable">$redis->zRevRange(<span class="hljs-string">'tkey', <span class="hljs-number">0, -<span class="hljs-number">1,<span class="hljs-keyword">true);
<span class="hljs-comment">// 获取集合元素，从0位置 到 -1 位置，数组按照score降序处理 返回score关联数组
</span></span></span></span></span></span></span></span></span></span></span></code></span><span style="font-size: 15px;"><code><span class="hljs-variable">$redis->zRangeByScore(<span class="hljs-string">'tkey', <span class="hljs-number">0, <span class="hljs-number">0.2,<span class="hljs-keyword">array(<span class="hljs-string">'withscores' => <span class="hljs-keyword">true));
<span class="hljs-comment">//获取几个tkey中score在区间[0,0.2]元素 ,score由低到高排序,
元素具有相同的score，那么会按照字典顺序排列 , withscores 控制返回关联数组
</span></span></span></span></span></span></span></span></code></span><span style="font-size: 15px;"><code><span class="hljs-variable">$redis->zRangeByScore(<span class="hljs-string">'tkey', <span class="hljs-number">0.1, <span class="hljs-number">0.36, <span class="hljs-keyword">array(<span class="hljs-string">'withscores' => <span class="hljs-keyword">TRUE, <span class="hljs-string">'limit' => <span class="hljs-keyword">array(<span class="hljs-number">0, <span class="hljs-number">1)));
<span class="hljs-comment">//其中limit中 0和1 表示取符合条件集合中 从0位置开始，向后扫描1个 返回关联数组
</span></span></span></span></span></span></span></span></span></span></span></span></code></span><span style="font-size: 15px;"><code><span class="hljs-variable">$redis->zCount(<span class="hljs-string">'tkey', <span class="hljs-number">2, <span class="hljs-number">10); <span class="hljs-comment">// 获取tkey中score在区间[2, 10]元素的个数 </span></span></span></span></span></code></span>
<span style="font-size: 15px;"><code>$redis->zRemRangeByScore('tkey', 1, 3); // 移除tkey中score在区间[<span class="hljs-link_label">1, 3](<span class="hljs-link_url">含边界)的元素
</span></span></code></span><span style="font-size: 15px;"><code><span class="hljs-variable">$redis->zRemRangeByRank(<span class="hljs-string">'tkey', <span class="hljs-number">0, <span class="hljs-number">1);
<span class="hljs-comment">//默认元素score是递增的，移除tkey中元素 从0开始到-1位置结束
</span></span></span></span></span></code></span><span style="font-size: 15px;"><code><span class="hljs-variable">$redis->zSize(<span class="hljs-string">'tkey'); <span class="hljs-comment">//返回存储在key对应的有序集合中的元素的个数 </span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->zScore(<span class="hljs-string">'tkey', <span class="hljs-string">'A'); <span class="hljs-comment">// 返回集合tkey中元素A的score值 </span></span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->zRank(<span class="hljs-string">'tkey', <span class="hljs-string">'A');
<span class="hljs-comment">// 返回集合tkey中元素A的索引值
z集合中元素按照score从低到高进行排列 ，即最低的score index索引为<span class="hljs-number">0
</span></span></span></span></span></code></span><span style="font-size: 15px;"><code><span class="hljs-variable">$redis->zIncrBy(<span class="hljs-string">'tkey', <span class="hljs-number">2.5, <span class="hljs-string">'A'); <span class="hljs-comment">// 将集合tkey中元素A的score值 加 2.5 </span></span></span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->zUnion(<span class="hljs-string">'union', <span class="hljs-keyword">array(<span class="hljs-string">'tkey', <span class="hljs-string">'tkey1'));
<span class="hljs-comment">// 将集合tkey和集合tkey1元素合并于集合union , 并且新集合中元素不能重复
返回新集合的元素个数， 如果元素A在tkey和tkey1都存在，则合并后的元素A的score相加
</span></span></span></span></span></span></code></span><span style="font-size: 15px;"><code><span class="hljs-variable">$redis->zUnion(<span class="hljs-string">'ko2', <span class="hljs-keyword">array(<span class="hljs-string">'k1', <span class="hljs-string">'k2'), <span class="hljs-keyword">array(<span class="hljs-number">5, <span class="hljs-number">2));
<span class="hljs-comment">// 集合k1和集合k2并集于k02 ，array(5,1)中元素的个数与子集合对应，然后 5 对应k1
k1每个元素score都要乘以<span class="hljs-number">5 ，同理<span class="hljs-number">1对应k2，k2每个元素score乘以<span class="hljs-number">1
然后元素按照递增排序，默认相同的元素score(SUM)相加
</span></span></span></span></span></span></span></span></span></span></span></span></code></span><span style="font-size: 15px;"><code><span class="hljs-variable">$redis->zUnion(<span class="hljs-string">'ko2', <span class="hljs-keyword">array(<span class="hljs-string">'k1', <span class="hljs-string">'k2'), <span class="hljs-keyword">array(<span class="hljs-number">10, <span class="hljs-number">2),<span class="hljs-string">'MAX');
<span class="hljs-comment">// 各个子集乘以因子之后，元素按照递增排序，相同的元素的score取最大值(MAX)
也可以设置MIN 取最小值
</span></span></span></span></span></span></span></span></span></span></code></span><span style="font-size: 15px;"><code><span class="hljs-variable">$redis->zInter(<span class="hljs-string">'ko1', <span class="hljs-keyword">array(<span class="hljs-string">'k1', <span class="hljs-string">'k2'));
<span class="hljs-comment">// 集合k1和集合k2取交集于k01 ，且按照score值递增排序
如果集合元素相同，则新集合中的元素的score值相加
</span></span></span></span></span></span></code></span><span style="font-size: 15px;"><code><span class="hljs-variable">$redis->zInter(<span class="hljs-string">'ko1', <span class="hljs-keyword">array(<span class="hljs-string">'k1', <span class="hljs-string">'k2'), <span class="hljs-keyword">array(<span class="hljs-number">5, <span class="hljs-number">1));
<span class="hljs-comment">//集合k1和集合k2取交集于k01 ，array(5,1)中元素的个数与子集合对应，然后 5 对应k1
k1每个元素score都要乘以<span class="hljs-number">5 ，同理<span class="hljs-number">1对应k2，k2每个元素score乘以<span class="hljs-number">1
，然后元素score按照递增排序，默认相同的元素score(SUM)相加
</span></span></span></span></span></span></span></span></span></span></span></span></code></span><span style="font-size: 15px;"><code><span class="hljs-variable">$redis->zInter(<span class="hljs-string">'ko1', <span class="hljs-keyword">array(<span class="hljs-string">'k1', <span class="hljs-string">'k2'), <span class="hljs-keyword">array(<span class="hljs-number">5, <span class="hljs-number">1),<span class="hljs-string">'MAX');
<span class="hljs-comment">// 各个子集乘以因子之后，元素score按照递增排序，相同的元素score取最大值(MAX)
也可以设置MIN 取最小值
</span></span></span></span></span></span></span></span></span></span></code></span>redis hash是一個string類型的field和value的映射表.它的添加，刪除操作都是O(1)（平均）.hash特別適合用於存儲對象。
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->hSet(<span class="hljs-string">'h', <span class="hljs-string">'name', <span class="hljs-string">'TK'); <span class="hljs-comment">// 在h表中 添加name字段 value为TK </span></span></span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->hSetNx(<span class="hljs-string">'h', <span class="hljs-string">'name', <span class="hljs-string">'TK');
<span class="hljs-regexp">// 在h表中 添加name字段 value为<span class="hljs-constant">TK 如果字段name的value存在返回<span class="hljs-keyword">false 否则返回 <span class="hljs-keyword">true
</span></span></span></span></span></span></span></span></code></span><span style="font-size: 15px;"><code><span class="hljs-variable">$redis->hGet(<span class="hljs-string">'h', <span class="hljs-string">'name'); <span class="hljs-comment">// 获取h表中name字段value </span></span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->hLen(<span class="hljs-string">'h'); <span class="hljs-comment">// 获取h表长度即字段的个数 </span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->hDel(<span class="hljs-string">'h',<span class="hljs-string">'email'); <span class="hljs-comment">// 删除h表中email 字段 </span></span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->hKeys(<span class="hljs-string">'h'); <span class="hljs-comment">// 获取h表中所有字段 </span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->hVals(<span class="hljs-string">'h'); <span class="hljs-comment">// 获取h表中所有字段value </span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->hGetAll(<span class="hljs-string">'h'); <span class="hljs-comment">// 获取h表中所有字段和value 返回一个关联数组(字段为键值) </span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->hExists(<span class="hljs-string">'h', <span class="hljs-string">'email'); <span class="hljs-regexp">//判断email 字段是否存在与表h 不存在返回<span class="hljs-keyword">false </span></span></span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->hSet(<span class="hljs-string">'h', <span class="hljs-string">'age', <span class="hljs-number">28); </span></span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->hIncrBy(<span class="hljs-string">'h', <span class="hljs-string">'age', -<span class="hljs-number">2); <span class="hljs-regexp">// 设置h表中age字段value加(-<span class="hljs-number">2) 如果value是个非数值 则返回<span class="hljs-keyword">false 否则，返回操作后的value </span></span></span></span></span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->hIncrByFloat(<span class="hljs-string">'h', <span class="hljs-string">'age', -<span class="hljs-number">0.<span class="hljs-number">33);
<span class="hljs-regexp">// 设置h表中age字段value加(-<span class="hljs-number">2.6) 如果value是个非数值 则返回<span class="hljs-keyword">false 否则
返回操作后的value(小数点保留<span class="hljs-number">15位)
</span></span></span></span></span></span></span></span></span></code></span><span style="font-size: 15px;"><code><span class="hljs-variable">$redis->hMset(<span class="hljs-string">'h', <span class="hljs-keyword">array(<span class="hljs-string">'score' => <span class="hljs-string">'80', <span class="hljs-string">'salary' => <span class="hljs-number">2000)); <span class="hljs-comment">// 表h 批量设置字段和value </span></span></span></span></span></span></span></span></code></span>
<span style="font-size: 15px;"><code><span class="hljs-variable">$redis->hMGet(<span class="hljs-string">'h', <span class="hljs-keyword">array(<span class="hljs-string">'score',<span class="hljs-string">'salary')); <span class="hljs-comment">// 表h 批量获取字段的value</span></span></span></span></span></span></code></span>
