php-使用哈希对象缓存

设置哈希缓存

<?php      error_reporting(E_ALL);    ini_set('display_errors','On');    $driver = new Redis();    $driver->connect('127.0.0.1',6379);    $driver->select(0);    $driver->hMset('people',[        'name' => 'hls',        'age' => 20,        'height' => 180,        'width' => 55,    ]);    $data = $driver->hGetAll('people');    var_dump($data);exit;

output

array(4) { ["name"]=> string(3) "hls" ["age"]=> string(2) "20" ["height"]=> string(3) "180" ["width"]=> string(2) "55" }

获取哈希缓存对象的所有key

<?php      error_reporting(E_ALL);    ini_set('display_errors','On');    $driver = new Redis();    $driver->connect('127.0.0.1',6379);    $driver->select(0);    $driver->hMset('people',[        'name' => 'hls',        'age' => 20,        'height' => 180,        'width' => 55,    ]);    $data = $driver->hKeys('people');    var_dump($data);exit;

output

array(4) { [0]=> string(4) "name" [1]=> string(3) "age" [2]=> string(6) "height" [3]=> string(5) "width" }

获取哈希缓存对象的长度(key的个数)

<?php    error_reporting(E_ALL);    ini_set('display_errors','On');    $driver = new Redis();    $driver->connect('127.0.0.1',6379);    $driver->select(0);    $driver->hMset('people',[        'name' => 'hls',        'age' => 20,        'height' => 180,        'width' => 55,    ]);    $data = $driver->hLen('people');    var_dump($data);exit;

output

int(4)

获取哈希缓存对象某个属性进行递增

<?php    error_reporting(E_ALL);    ini_set('display_errors','On');    $driver = new Redis();    $driver->connect('127.0.0.1',6379);    $driver->select(0);    $driver->hMset('people',[        'name' => 'hls',        'age' => 20,        'height' => 180,        'width' => 55,    ]);    $driver->hIncrBy('people','age',5);    $data = $driver->hGetAll('people');    var_dump($data);exit;

使用hIncrBy如果递增不存在的key 会默认创建key

output

array(4) { ["name"]=> string(3) "hls" ["age"]=> string(2) "25" ["height"]=> string(3) "180" ["width"]=> string(2) "55" }

获取哈希缓存对象指定的key

<?php    error_reporting(E_ALL);    ini_set('display_errors','On');    $driver = new Redis();    $driver->connect('127.0.0.1',6379);    $driver->select(0);    $driver->hMset('people',[        'name' => 'hls',        'age' => 20,        'height' => 180,        'width' => 55,    ]);    $data = $driver->hGet('people','name');    var_dump($data);exit;

output

string(3) "hls"

获取哈希缓存对象指定的keys(数组返回)

<?php    error_reporting(E_ALL);    ini_set('display_errors','On');    $driver = new Redis();    $driver->connect('127.0.0.1',6379);    $driver->select(0);    $driver->hMset('people',[        'name' => 'hls',        'age' => 20,        'height' => 180,        'width' => 55,    ]);    $data = $driver->hMGet('people',['name','age']);    var_dump($data);exit;

output

array(2) { ["name"]=> string(3) "hls" ["age"]=> string(2) "20" }

不存在的key 返回的值为false

设置哈希缓存对象指定的key的value

<?php    error_reporting(E_ALL);    ini_set('display_errors','On');    $driver = new Redis();    $driver->connect('127.0.0.1',6379);    $driver->select(0);    $driver->hMset('people',[        'name' => 'hls',        'age' => 20,        'height' => 180,        'width' => 55,    ]);    $driver->hSet('people','age',100);    $data = $driver->hGetAll('people');    var_dump($data);exit;

output

array(6) { ["name"]=> string(3) "hls" ["age"]=> string(3) "100" ["height"]=> string(3) "180" ["width"]=> string(2) "55" ["age1"]=> string(2) "10" ["age2"]=> string(1) "5" }

判断哈希缓存对象指定的key是否存在

<?php    error_reporting(E_ALL);    ini_set('display_errors','On');    $driver = new Redis();    $driver->connect('127.0.0.1',6379);    $driver->select(0);    $driver->hMset('people',[        'name' => 'hls',        'age' => 20,        'height' => 180,        'width' => 55,    ]);    $result = $driver->hExists('people','qwe');    var_dump($result);exit;

output

bool(false)

删除哈希对象指定的属性key

<?php    error_reporting(E_ALL);    ini_set('display_errors','On');    $driver = new Redis();    $driver->connect('127.0.0.1',6379);    $driver->select(0);    $driver->delete('people');    $driver->hMset('people',[        'name' => 'hls',        'age' => 20,        'height' => 180,        'width' => 55,    ]);    $result = $driver->hDel('people','name');    $data = $driver->hGetAll('people');    var_dump($data);exit;

output

array(3) { ["age"]=> string(2) "20" ["height"]=> string(3) "180" ["width"]=> string(2) "55" }