Home Backend Development PHP Tutorial php操作redis缓存方法分享_php实例

php操作redis缓存方法分享_php实例

Jun 07, 2016 pm 05:12 PM
php redis cache

php redis缓存操作

<&#63;php
/**
 * Redis缓存操作
 * @author hxm
 * @version 1.0
 * @since 2015.05.04
 */
class RCache extends Object implements CacheFace 
{
  private $redis = null; //redis对象
   
  private $sId  = 1;  //servier服务ID
   
  private $con  = null;//链接资源
   
  /**
   * 初始化Redis
   *
   * @return Object
   */
  public function __construct()
  {
    if ( !class_exists('Redis') )
    {
      throw new QException('PHP extension does not exist: Redis');
    }
    $this->redis = new Redis();
  }
   
  /**
   * 链接memcahce服务
   *
   * @access private
   * @param  string $key 关键字
   * @param  string $value 缓存内容
   * @return array
   */
  private function connect( $sid )
  {
    $file = $this->CacheFile();
    require $file;
    if(! isset($cache) )
    {
      throw new QException('缓存配置文件不存在'.$file);
    }
    $server = $cache[$this->cacheId];
    $sid  = isset($sid) == 0 &#63; $this->sId : $sid;//memcache服务选择
    if ( ! $server[$sid])
    {
      throw new QException('当前操作的缓存服务器配置文件不存在');
    }
    $host = $server[$sid]['host'];
    $port = $server[$sid]['port'];
    try {
      $this->redis->connect( $host , $port );
    } catch (Exception $e) {
      exit('memecache连接失败,错误信息:'. $e->getMessage());
    }
  }
   
  /**
   * 写入缓存
   *
   * @access private
   * @param  string $key 关键字
   * @param  string $value 缓存内容
   * @return array
   */
  public function set( $key , $value , $sid , $expire = 0)
  {
    $data = $this->get($key , $sid); //如果已经存在key值
    if( $data ) 
    {
      return $this->redis->getset( $key , $value);
    } else {
      return $this->redis->set( $key , $value);
    }
  }
   
  /**
   * 读取缓存
   *
   * @access private
   * @param  string $key 关键字
   * @param  int   $sid 选择第几台memcache服务器
   * @return array
   */
  public function get( $key , $sid)
  {
    $this->connect( $sid );
    return $this->redis->get($key);
  }
   
  /**
   * 清洗(删除)已经存储的所有的元素
   *
   * @access private
   * @return array
   */
  public function flush()
  {
    $this->connect();
    return $this->redis->flushall();
  }
  /**
   * 删除缓存
   *
   * @access private
   * @param  string $key 关键字
   * @param  int   $sid 选择第几台memcache服务器
   * @return array
   */
  public function remove( $key , $sid)
  {
    $this->connect();
    return $this->redis->del($key);
  }
   
  /**
   * 析构函数
   * 最后关闭memcache
   */
  public function __destruct()
  {
    if($this->redis)
    {
      $this->redis->close();
    }
  }
}
Copy after login

以上所述就是本文的全部内容了,希望大家能够喜欢。

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

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

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)

Hot Topics

Java Tutorial
1664
14
PHP Tutorial
1266
29
C# Tutorial
1239
24
Explain JSON Web Tokens (JWT) and their use case in PHP APIs. Explain JSON Web Tokens (JWT) and their use case in PHP APIs. Apr 05, 2025 am 12:04 AM

JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,

Explain late static binding in PHP (static::). Explain late static binding in PHP (static::). Apr 03, 2025 am 12:04 AM

Static binding (static::) implements late static binding (LSB) in PHP, allowing calling classes to be referenced in static contexts rather than defining classes. 1) The parsing process is performed at runtime, 2) Look up the call class in the inheritance relationship, 3) It may bring performance overhead.

What are PHP magic methods (__construct, __destruct, __call, __get, __set, etc.) and provide use cases? What are PHP magic methods (__construct, __destruct, __call, __get, __set, etc.) and provide use cases? Apr 03, 2025 am 12:03 AM

What are the magic methods of PHP? PHP's magic methods include: 1.\_\_construct, used to initialize objects; 2.\_\_destruct, used to clean up resources; 3.\_\_call, handle non-existent method calls; 4.\_\_get, implement dynamic attribute access; 5.\_\_set, implement dynamic attribute settings. These methods are automatically called in certain situations, improving code flexibility and efficiency.

PHP and Python: Comparing Two Popular Programming Languages PHP and Python: Comparing Two Popular Programming Languages Apr 14, 2025 am 12:13 AM

PHP and Python each have their own advantages, and choose according to project requirements. 1.PHP is suitable for web development, especially for rapid development and maintenance of websites. 2. Python is suitable for data science, machine learning and artificial intelligence, with concise syntax and suitable for beginners.

PHP in Action: Real-World Examples and Applications PHP in Action: Real-World Examples and Applications Apr 14, 2025 am 12:19 AM

PHP is widely used in e-commerce, content management systems and API development. 1) E-commerce: used for shopping cart function and payment processing. 2) Content management system: used for dynamic content generation and user management. 3) API development: used for RESTful API development and API security. Through performance optimization and best practices, the efficiency and maintainability of PHP applications are improved.

PHP: A Key Language for Web Development PHP: A Key Language for Web Development Apr 13, 2025 am 12:08 AM

PHP is a scripting language widely used on the server side, especially suitable for web development. 1.PHP can embed HTML, process HTTP requests and responses, and supports a variety of databases. 2.PHP is used to generate dynamic web content, process form data, access databases, etc., with strong community support and open source resources. 3. PHP is an interpreted language, and the execution process includes lexical analysis, grammatical analysis, compilation and execution. 4.PHP can be combined with MySQL for advanced applications such as user registration systems. 5. When debugging PHP, you can use functions such as error_reporting() and var_dump(). 6. Optimize PHP code to use caching mechanisms, optimize database queries and use built-in functions. 7

Explain the match expression (PHP 8 ) and how it differs from switch. Explain the match expression (PHP 8 ) and how it differs from switch. Apr 06, 2025 am 12:03 AM

In PHP8, match expressions are a new control structure that returns different results based on the value of the expression. 1) It is similar to a switch statement, but returns a value instead of an execution statement block. 2) The match expression is strictly compared (===), which improves security. 3) It avoids possible break omissions in switch statements and enhances the simplicity and readability of the code.

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.

See all articles