Home Backend Development PHP Tutorial PHP实现操作redis的封装类完整实例_PHP

PHP实现操作redis的封装类完整实例_PHP

May 28, 2016 pm 01:13 PM
php redis

本文实例讲述了PHP实现操作redis的封装类。分享给大家供大家参考,具体如下:

<&#63;php
/**
 * Redis 操作,支持 Master/Slave 的负载集群
 *
 * @author jackluo
 */
class RedisCluster{
  // 是否使用 M/S 的读写集群方案
  private $_isUseCluster = false;
  // Slave 句柄标记
  private $_sn = 0;
  // 服务器连接句柄
  private $_linkHandle = array(
    'master'=>null,// 只支持一台 Master
    'slave'=>array(),// 可以有多台 Slave
  );
  /**
   * 构造函数
   *
   * @param boolean $isUseCluster 是否采用 M/S 方案
   */
  public function __construct($isUseCluster=false){
    $this->_isUseCluster = $isUseCluster;
  }
  /**
   * 连接服务器,注意:这里使用长连接,提高效率,但不会自动关闭
   *
   * @param array $config Redis服务器配置
   * @param boolean $isMaster 当前添加的服务器是否为 Master 服务器
   * @return boolean
   */
  public function connect($config=array('host'=>'127.0.0.1','port'=>6379), $isMaster=true){
    // default port
    if(!isset($config['port'])){
      $config['port'] = 6379;
    }
    // 设置 Master 连接
    if($isMaster){
      $this->_linkHandle['master'] = new Redis();
      $ret = $this->_linkHandle['master']->pconnect($config['host'],$config['port']);
    }else{
      // 多个 Slave 连接
      $this->_linkHandle['slave'][$this->_sn] = new Redis();
      $ret = $this->_linkHandle['slave'][$this->_sn]->pconnect($config['host'],$config['port']);
      ++$this->_sn;
    }
    return $ret;
  }
  /**
   * 关闭连接
   *
   * @param int $flag 关闭选择 0:关闭 Master 1:关闭 Slave 2:关闭所有
   * @return boolean
   */
  public function close($flag=2){
    switch($flag){
      // 关闭 Master
      case 0:
        $this->getRedis()->close();
      break;
      // 关闭 Slave
      case 1:
        for($i=0; $i<$this->_sn; ++$i){
          $this->_linkHandle['slave'][$i]->close();
        }
      break;
      // 关闭所有
      case 1:
        $this->getRedis()->close();
        for($i=0; $i<$this->_sn; ++$i){
          $this->_linkHandle['slave'][$i]->close();
        }
      break;
    }
    return true;
  }
  /**
   * 得到 Redis 原始对象可以有更多的操作
   *
   * @param boolean $isMaster 返回服务器的类型 true:返回Master false:返回Slave
   * @param boolean $slaveOne 返回的Slave选择 true:负载均衡随机返回一个Slave选择 false:返回所有的Slave选择
   * @return redis object
   */
  public function getRedis($isMaster=true,$slaveOne=true){
    // 只返回 Master
    if($isMaster){
      return $this->_linkHandle['master'];
    }else{
      return $slaveOne &#63; $this->_getSlaveRedis() : $this->_linkHandle['slave'];
    }
  }
  /**
   * 写缓存
   *
   * @param string $key 组存KEY
   * @param string $value 缓存值
   * @param int $expire 过期时间, 0:表示无过期时间
   */
  public function set($key, $value, $expire=0){
    // 永不超时
    if($expire == 0){
      $ret = $this->getRedis()->set($key, $value);
    }else{
      $ret = $this->getRedis()->setex($key, $expire, $value);
    }
    return $ret;
  }
  /**
   * 读缓存
   *
   * @param string $key 缓存KEY,支持一次取多个 $key = array('key1','key2')
   * @return string || boolean 失败返回 false, 成功返回字符串
   */
  public function get($key){
    // 是否一次取多个值
    $func = is_array($key) &#63; 'mGet' : 'get';
    // 没有使用M/S
    if(! $this->_isUseCluster){
      return $this->getRedis()->{$func}($key);
    }
    // 使用了 M/S
    return $this->_getSlaveRedis()->{$func}($key);
  }
/*
  // magic function 
  public function __call($name,$arguments){
    return call_user_func($name,$arguments);  
  }
*/
  /**
   * 条件形式设置缓存,如果 key 不存时就设置,存在时设置失败
   *
   * @param string $key 缓存KEY
   * @param string $value 缓存值
   * @return boolean
   */
  public function setnx($key, $value){
    return $this->getRedis()->setnx($key, $value);
  }
  /**
   * 删除缓存
   *
   * @param string || array $key 缓存KEY,支持单个健:"key1" 或多个健:array('key1','key2')
   * @return int 删除的健的数量
   */
  public function remove($key){
    // $key => "key1" || array('key1','key2')
    return $this->getRedis()->delete($key);
  }
  /**
   * 值加加操作,类似 ++$i ,如果 key 不存在时自动设置为 0 后进行加加操作
   *
   * @param string $key 缓存KEY
   * @param int $default 操作时的默认值
   * @return int 操作后的值
   */
  public function incr($key,$default=1){
    if($default == 1){
      return $this->getRedis()->incr($key);
    }else{
      return $this->getRedis()->incrBy($key, $default);
    }
  }
  /**
   * 值减减操作,类似 --$i ,如果 key 不存在时自动设置为 0 后进行减减操作
   *
   * @param string $key 缓存KEY
   * @param int $default 操作时的默认值
   * @return int 操作后的值
   */
  public function decr($key,$default=1){
    if($default == 1){
      return $this->getRedis()->decr($key);
    }else{
      return $this->getRedis()->decrBy($key, $default);
    }
  }
  /**
   * 添空当前数据库
   *
   * @return boolean
   */
  public function clear(){
    return $this->getRedis()->flushDB();
  }
  /* =================== 以下私有方法 =================== */
  /**
   * 随机 HASH 得到 Redis Slave 服务器句柄
   *
   * @return redis object
   */
  private function _getSlaveRedis(){
    // 就一台 Slave 机直接返回
    if($this->_sn <= 1){
      return $this->_linkHandle['slave'][0];
    }
    // 随机 Hash 得到 Slave 的句柄
    $hash = $this->_hashId(mt_rand(), $this->_sn);
    return $this->_linkHandle['slave'][$hash];
  }
  /**
   * 根据ID得到 hash 后 0~m-1 之间的值
   *
   * @param string $id
   * @param int $m
   * @return int
   */
  private function _hashId($id,$m=10)
  {
    //把字符串K转换为 0~m-1 之间的一个值作为对应记录的散列地址
    $k = md5($id);
    $l = strlen($k);
    $b = bin2hex($k);
    $h = 0;
    for($i=0;$i<$l;$i++)
    {
      //相加模式HASH
      $h += substr($b,$i*2,2);
    }
    $hash = ($h*1)%$m;
    return $hash;
  }
  /**
   *  lpush 
   */
  public function lpush($key,$value){
    return $this->getRedis()->lpush($key,$value);
  }
  /**
   *  add lpop
   */
  public function lpop($key){
    return $this->getRedis()->lpop($key);
  }
  /**
   * lrange 
   */
  public function lrange($key,$start,$end){
    return $this->getRedis()->lrange($key,$start,$end);  
  }
  /**
   *  set hash opeation
   */
  public function hset($name,$key,$value){
    if(is_array($value)){
      return $this->getRedis()->hset($name,$key,serialize($value));  
    }
    return $this->getRedis()->hset($name,$key,$value);
  }
  /**
   *  get hash opeation
   */
  public function hget($name,$key = null,$serialize=true){
    if($key){
      $row = $this->getRedis()->hget($name,$key);
      if($row && $serialize){
        unserialize($row);
      }
      return $row;
    }
    return $this->getRedis()->hgetAll($name);
  }
  /**
   *  delete hash opeation
   */
  public function hdel($name,$key = null){
    if($key){
      return $this->getRedis()->hdel($name,$key);
    }
    return $this->getRedis()->hdel($name);
  }
  /**
   * Transaction start
   */
  public function multi(){
    return $this->getRedis()->multi();  
  }
  /**
   * Transaction send
   */
  public function exec(){
    return $this->getRedis()->exec();  
  }
}// End Class
// ================= TEST DEMO =================
// 只有一台 Redis 的应用
$redis = new RedisCluster();
$redis->connect(array('host'=>'127.0.0.1','port'=>6379));
//*
$cron_id = 10001;
$CRON_KEY = 'CRON_LIST'; //
$PHONE_KEY = 'PHONE_LIST:'.$cron_id;//
//cron info
$cron = $redis->hget($CRON_KEY,$cron_id);
if(empty($cron)){
  $cron = array('id'=>10,'name'=>'jackluo');//mysql data
  $redis->hset($CRON_KEY,$cron_id,$cron); // set redis  
}
//phone list
$phone_list = $redis->lrange($PHONE_KEY,0,-1);
print_r($phone_list);
if(empty($phone_list)){
  $phone_list =explode(',','13228191831,18608041585');  //mysql data
  //join list
  if($phone_list){
    $redis->multi();
    foreach ($phone_list as $phone) {
      $redis->lpush($PHONE_KEY,$phone);      
    }
    $redis->exec();
  }
}
print_r($phone_list);
/*$list = $redis->hget($cron_list,);
var_dump($list);*/
//*/
//$redis->set('id',35);
/*
  $redis->lpush('test','1111');
  $redis->lpush('test','2222');
  $redis->lpush('test','3333');
  $list = $redis->lrange('test',0,-1);
  print_r($list);
  $lpop = $redis->lpop('test');
  print_r($lpop);
  $lpop = $redis->lpop('test');
  print_r($lpop);
  $lpop = $redis->lpop('test');
  print_r($lpop);
*/
//  var_dump($redis->get('id'));

Copy after login

希望本文所述对大家PHP程序设计有所帮助。

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. Best Graphic Settings
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. How to Fix Audio if You Can't Hear Anyone
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
WWE 2K25: How To Unlock Everything In MyRise
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

The Future of PHP: Adaptations and Innovations The Future of PHP: Adaptations and Innovations Apr 11, 2025 am 12:01 AM

The future of PHP will be achieved by adapting to new technology trends and introducing innovative features: 1) Adapting to cloud computing, containerization and microservice architectures, supporting Docker and Kubernetes; 2) introducing JIT compilers and enumeration types to improve performance and data processing efficiency; 3) Continuously optimize performance and promote best practices.

PHP vs. Python: Understanding the Differences PHP vs. Python: Understanding the Differences Apr 11, 2025 am 12:15 AM

PHP and Python each have their own advantages, and the choice should be based on project requirements. 1.PHP is suitable for web development, with simple syntax and high execution efficiency. 2. Python is suitable for data science and machine learning, with concise syntax and rich libraries.

How to build the redis cluster mode How to build the redis cluster mode Apr 10, 2025 pm 10:15 PM

Redis cluster mode deploys Redis instances to multiple servers through sharding, improving scalability and availability. The construction steps are as follows: Create odd Redis instances with different ports; Create 3 sentinel instances, monitor Redis instances and failover; configure sentinel configuration files, add monitoring Redis instance information and failover settings; configure Redis instance configuration files, enable cluster mode and specify the cluster information file path; create nodes.conf file, containing information of each Redis instance; start the cluster, execute the create command to create a cluster and specify the number of replicas; log in to the cluster to execute the CLUSTER INFO command to verify the cluster status; make

PHP: Is It Dying or Simply Adapting? PHP: Is It Dying or Simply Adapting? Apr 11, 2025 am 12:13 AM

PHP is not dying, but constantly adapting and evolving. 1) PHP has undergone multiple version iterations since 1994 to adapt to new technology trends. 2) It is currently widely used in e-commerce, content management systems and other fields. 3) PHP8 introduces JIT compiler and other functions to improve performance and modernization. 4) Use OPcache and follow PSR-12 standards to optimize performance and code quality.

How to view all keys in redis How to view all keys in redis Apr 10, 2025 pm 07:15 PM

To view all keys in Redis, there are three ways: use the KEYS command to return all keys that match the specified pattern; use the SCAN command to iterate over the keys and return a set of keys; use the INFO command to get the total number of keys.

How to implement the underlying redis How to implement the underlying redis Apr 10, 2025 pm 07:21 PM

Redis uses hash tables to store data and supports data structures such as strings, lists, hash tables, collections and ordered collections. Redis persists data through snapshots (RDB) and append write-only (AOF) mechanisms. Redis uses master-slave replication to improve data availability. Redis uses a single-threaded event loop to handle connections and commands to ensure data atomicity and consistency. Redis sets the expiration time for the key and uses the lazy delete mechanism to delete the expiration key.

How to use the redis command How to use the redis command Apr 10, 2025 pm 08:45 PM

Using the Redis directive requires the following steps: Open the Redis client. Enter the command (verb key value). Provides the required parameters (varies from instruction to instruction). Press Enter to execute the command. Redis returns a response indicating the result of the operation (usually OK or -ERR).

How to read the source code of redis How to read the source code of redis Apr 10, 2025 pm 08:27 PM

The best way to understand Redis source code is to go step by step: get familiar with the basics of Redis. Select a specific module or function as the starting point. Start with the entry point of the module or function and view the code line by line. View the code through the function call chain. Be familiar with the underlying data structures used by Redis. Identify the algorithm used by Redis.

See all articles