# PHP優化基礎 PHP優化基礎書： https://www.sitepoint.com/premium/books/performance-project ## 1，用Blackfire監控PHP性能問題 PHP-level Performance Optimization with Blackfire： 紅色排前面的就是性能問題所在：  ***** ## 2，檢查Mysql性能 MySQL Performance Boosting with Indexes and Explain： ### show profiles看執行情況： 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慢查詢:  ***** ***** ## 3，用GTmetrix工具檢查存在問題 Improving Performance Perception with Pingdom and GTmetrix： 例如： ### On-demand Image Resizing 圖片加載方面：用srcset  ***** ## 4，后臺任務異步化 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.  異步的另一個好處：多任務多worker并行處理: 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方面的優化 Server-side Optimization with Nginx and pm-static php-fpm :`dynamic`,?`ondemand`?and?`static`, 嘗試 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，頁面靜態化 Nginx and **fastcgi Caching** 動態php變成頁面靜態化   同時也可以使用**Cloudflare** 和 **varnish**。