# PHP优化基础 PHP优化基础书： https://www.sitepoint.com/premium/books/performance-project ## 1，用Blackfire监控PHP性能问题 PHP-level Performance Optimization with Blackfire： 红色排前面的就是性能问题所在：  ***** ## 2，检查Mysql性能 MySQL Performance Boosting with Indexes and Explain： ### show profiles看执行情况： As we can see, the `show profiles;` command gives us times not only for the original query but also for all the other queries that are made. This way we can accurately profile our queries.  ### explain慢查询:  ***** ***** ## 3，用GTmetrix工具检查存在问题 Improving Performance Perception with Pingdom and GTmetrix： 例如： ### On-demand Image Resizing 图片加载方面：用srcset  ***** ## 4，后台任务异步化 Using Background Processing to Speed Up Page Load Times  We're using the [Beanstalkd](http://kr.github.io/beanstalkd/) job queue to store jobs, the Symfony Console component to implement workers as console commands and [Supervisor](http://supervisord.org/) to take care of worker processes.  异步的另一个好处：多任务多worker并行处理: The best part about background processing is the ease of parallel processing. We can set a `numprocs=5` directive and Supervisor will spawn five instances of our workers. ### 利用supervisor:  ***** ## 6，Nginx 和 PHP-FPM方面的优化 Server-side Optimization with Nginx and pm-static php-fpm :`dynamic`, `ondemand` and `static`, 尝试 使用：**static** https://www.sitepoint.com/server-side-optimization-with-nginx-and-pm-static/ tried the `pm = static` setting, allowing our PHP processes to take over the maximum of the server's resources, short of swapping, or driving the CPU to a halt. This setting means we're forcing the maximum out of our system at all times. It also means that — within our server's constraints — there won't be any spawning overhead time cost. ***** ## 7，页面静态化 Nginx and **fastcgi Caching** 动态php变成页面静态化   同时也可以使用**Cloudflare** 和 **varnish**。