最近由于项目关系,又要开始折腾CI框架了。其中需要在CI框架中使用到memcached缓存处理技术。
走,搞起,先装memcached:
第一步:先下载memcached.exe文件:
下载地址:http://www.tanbo.name/wp-content/uploads/2012/12/memcached.exe
第二步:下载php_memcache.dll
memcached下载地址:(在网上找的,注意必须跟自己PHP版本相对应才行。怎么查看自己的php版本?写个phpinfo文件即可)
http://www.tanbo.name/wp-content/uploads/2012/12/php_memcache.dll_.zip
第三步:开始安装
1、将php_memcache.dll放入你的php安装包的ext扩展文件夹中。然后在php.ini中的扩展目录下面添加一行extension=php_memcache.dll
2、将memcached.exe文件放在C盘根目录下(随便你放哪里),然后打开进入cmd,输入一下命令进行安装和开启memcached。(提醒:开启好后,以后就不用管了,电脑启动自己会开启memcached的)
安装: memcached.exe -d install
服务: net start "memcached Server"
启动: memcached.exe -d start
如图:
第四步:重启自己的web环境apache,查看phpinfo()内是否已装载了memcache。如果有就表示安装ok了。
第五步:写个代码测试下。如果没有报错就一切ok了。
<?php$mem = new Memcache;$mem->connect('localhost', 11211) or die ("Could not connect");echo "<h2>版本:".$mem->getVersion()."<h2>";echo "<h2>版本:".$mem->getExtendedStats()."<h2>";print_r($mem->getExtendedStats());?>
这里注意下:memcached的默认端口号是11211。如果被占用,就改成别的。
这就表示可以使用了。
参考资料:http://www.tanbo.name/html/158.html
php安装使用memcached,到这里算是ok了。但是发现了新疑问:
memcache和memcached的区别是啥???
Memcache模块提供了于memcached方便的面向过程及面向对象的接口,memcached是为了降低动态web应用 从数据库加载数据而产生的一种常驻进程缓存产品。
memcached是一个高性能分布式的内存对象缓存系统, 通常被用于降低数据库加载压力以提高动态web应用的响应速度。
看手册吧:
http://php.net/manual/zh/book.memcache.php
http://php.net/manual/zh/book.memcached.php
memcache和memcached的区别 网上资料 :
http://www.cnblogs.com/scotoma/archive/2011/02/15/1955573.html
http://www.cnblogs.com/wangtao_20/p/4057591.html
http://blog.csdn.net/yaday/article/details/7570032
https://blog.linuxeye.com/345.html

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 makes it easy to create interactive web content. 1) Dynamically generate content by embedding HTML and display it in real time based on user input or database data. 2) Process form submission and generate dynamic output to ensure that htmlspecialchars is used to prevent XSS. 3) Use MySQL to create a user registration system, and use password_hash and preprocessing statements to enhance security. Mastering these techniques will improve the efficiency of web development.

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 is still dynamic and still occupies an important position in the field of modern programming. 1) PHP's simplicity and powerful community support make it widely used in web development; 2) Its flexibility and stability make it outstanding in handling web forms, database operations and file processing; 3) PHP is constantly evolving and optimizing, suitable for beginners and experienced developers.

PHP remains important in modern web development, especially in content management and e-commerce platforms. 1) PHP has a rich ecosystem and strong framework support, such as Laravel and Symfony. 2) Performance optimization can be achieved through OPcache and Nginx. 3) PHP8.0 introduces JIT compiler to improve performance. 4) Cloud-native applications are deployed through Docker and Kubernetes to improve flexibility and scalability.

PHP is suitable for web development, especially in rapid development and processing dynamic content, but is not good at data science and enterprise-level applications. Compared with Python, PHP has more advantages in web development, but is not as good as Python in the field of data science; compared with Java, PHP performs worse in enterprise-level applications, but is more flexible in web development; compared with JavaScript, PHP is more concise in back-end development, but is not as good as JavaScript in front-end development.

PHP and Python each have their own advantages and are suitable for different scenarios. 1.PHP is suitable for web development and provides built-in web servers and rich function libraries. 2. Python is suitable for data science and machine learning, with concise syntax and a powerful standard library. When choosing, it should be decided based on project requirements.

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


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