php-cli和php-fpm的关系是什么?
php-cli和php-fpm的关系是什么?
另外还有个php-zts,百度了一下叫“线程安全版”。
那么,这三个东西,该用哪个呢,能分别说一下它们的使用场景么?
https://hub.docker.com/_/php/
回复内容:
php-cli和php-fpm的关系是什么?
另外还有个php-zts,百度了一下叫“线程安全版”。
那么,这三个东西,该用哪个呢,能分别说一下它们的使用场景么?
https://hub.docker.com/_/php/
CLI是命令行版本。
FPM是作为Apache或者Nginx等服务器软件处理PHP文件的扩展。
PHP的默认版本是不支持线程安全的,这个线程安全问题可以去了解PHP扩展开发方面的相关知识,这是因为C语言方面的问题了。
cli和fpm是php的两种运行方式,而线程安全和非线程安全应该才能说的上是版本。是否开启线程安全可以在编译PHP的时候进行选择的。
简单理解呢,cli就是你在命令行里运行PHP用的,fpm就是通过web访问用的
cli就是我们在命令行里使用的那个php命令,其实它也可以提供HTTP服务,因为它内置了一个HTTP服务器:
<code>php -S 127.0.0.1:80 -t /www /www/index.php </code>
这样就建立了一个监听127.0.0.1上80端口,根目录为/www的单进程HTTP服务了,可以用于PHP开发和测试.
其中index.php是重写规则,可以用PHP实现,比如:
<code><?php $uri = parse_url($_SERVER['REQUEST_URI'], PHP_URL_PATH); if (file_exists(dirname(__FILE__).$uri)) { return false; //如果请求的文件或目录存在,直接返回 } else { print_r($url); //分析URI,进行路由 } </code></code>
上面这段PHP代码跟采用index.php作为前端控制器(路由)的框架的Nginx重写规则含义相近.
<code>location / { try_files $uri $uri/ /index.php?$args; } </code>
php-fpm是一个多进程架构的FastCGI服务,内置php解释器,进程后台常驻,自带进程管理器,支持进程池配置,多配合Nginx使用.
Linux上自行编译的PHP默认是非线程安全的,什么时候需要线程安全呢?
比如你要使用pthreads这个PHP多线程PECL扩展,
或者你的PHP跑在一个多线程的容器内,比如Apache event MPM,这是一个多线程的MPM.

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