好久没装过PHP环境了,好久没有手动配置LNMP环境了,今天就让我头疼了一把!
不过随着时间的推移,yum的源里越来越多的库可以直接使用了,现在自己在配置nginx和php环境就不再需要源码编译,也不再需要往yum中添加啥源了,直接就可以通过下面的命令完成安装:
yum install -y nginx php php-fpm
若系统之前yum安装过php,可以先卸载了:
yum remove httpd* php*
安装完毕后,需要稍微修改一下配置文件来完成最后的工作,php-fpm需要修改一下权限:
vi /etc/php-fpm.d/www.conf
将 Unix user/group of processes改成你os对应的设置,例如:
user = www group = www
然后需要开启nginx对应的php配置项:
vi /etc/nginx/conf.d/default.conf
开启下面这部分配置:
location ~ \.php$ { include /etc/nginx/fastcgi_params; fastcgi_pass 127.0.0.1:9000; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; }
一切就绪,就可以分别开启对应服务了:
/etc/init.d/php-fpm restart /etc/init.d/nginx restart
nginx File not found 错误
这个时候如果你访问本地的nginx服务,如果看到了”File not found”错误提醒,原因多半是: php-fpm进程找不到SCRIPT_FILENAME配置的要执行的.php文件。
由于默认nginx将 root参数放在了 location内部,所以你得注意一下对应设置的文件目录是否正确,或者推荐你将 root参数从 location中移到 server中,这样所有的子 location将使用统一的web根目录。
此外,为了避免一些php cms系统的默认行为,你还是最好将 index参数里增加 index.php,来适配系统的默认首页匹配规范,避免不必要的麻烦。

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

The reasons why PHP is the preferred technology stack for many websites include its ease of use, strong community support, and widespread use. 1) Easy to learn and use, suitable for beginners. 2) Have a huge developer community and rich resources. 3) Widely used in WordPress, Drupal and other platforms. 4) Integrate tightly with web servers to simplify development deployment.

PHP remains a powerful and widely used tool in modern programming, especially in the field of web development. 1) PHP is easy to use and seamlessly integrated with databases, and is the first choice for many developers. 2) It supports dynamic content generation and object-oriented programming, suitable for quickly creating and maintaining websites. 3) PHP's performance can be improved by caching and optimizing database queries, and its extensive community and rich ecosystem make it still important in today's technology stack.

In PHP, weak references are implemented through the WeakReference class and will not prevent the garbage collector from reclaiming objects. Weak references are suitable for scenarios such as caching systems and event listeners. It should be noted that it cannot guarantee the survival of objects and that garbage collection may be delayed.

The \_\_invoke method allows objects to be called like functions. 1. Define the \_\_invoke method so that the object can be called. 2. When using the $obj(...) syntax, PHP will execute the \_\_invoke method. 3. Suitable for scenarios such as logging and calculator, improving code flexibility and readability.


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