PHP 8.0 is in the final stages of its release cycle. As of the publish date of this post, version 8.0 RC5 has been released, and the final release of PHP 8.0.0 is scheduled for November 26, 2020.
Zend optimizer is a component of the PHP runtime system that improves performance by up to 30% on a range of Zend micro-benchmarks. Before PHP 7.4 the Zend optimizer was not enabled for Arm.
而 PHP 8 的差距拉大，則是因為 PHP 有更多針對 ARM 平台的改善，像是這邊提到的 NEON 指令集：
PHP-8 plans to release in 2021 with more improvements for Arm64: an improved toupper/tolower function brings performance up by 16.5x. https://github.com/php/php-src/pull/4439
AWS has contributed changes to PCRE2 release 10.34. PCRE2 version 10.34 is used in PHP-8 to match regular expressions. PCRE2 accounted for about 8% of execution time in WordPress benchmark. The change contributed by AWS to PCRE2 vectorizes first character match and matching pairs of characters with NEON instructions: performance improves by up to 8x on M6g.
Unbundle ext/xmlrpc (i.e. move it to PECL) without any explicit deprecation.
主要的考慮是在於目前的 library 已經年久失修：
ext/xmlrpc relies on on libxmlrpc-epi, which is abandoned. Even worse, we are bundling a modified 0.51, while the latest version is 0.54.1. This is exacerbated by the fact that the system library is usually built against libexpat, but the bundled library is likely to be built against libxml2 using our compatibility layer.
Make it impossible to disable the JSON extension through configuration or build options. Require that JSON be built statically instead of as a shared library.
而最近在研究的另外一個服務是 Google Analytics，我只用很基本的功能 (像是熱門文章，作業系統與瀏覽器的比率這些很基本的資料)，不需要對於觀看客群有了解 (這個需要像 Google Analytics 跨站蒐集資料)，所以替代方案應該不難找...
憑著印象與一些關鍵字，找到了 Matomo，這是一套 open source 的 web analytics 服務，以前叫做 Piwik (參考「Piwik is now Matomo - Announcement」)，整個系統用 PHP + MySQL 就可以打發 (反正量不大的東西不需要拿什麼神兵利器出來，MySQL 硬塞硬算就可以了)，接著把本來 Google Analytics 的 js 換掉就行了...
We decided to migrate the packagist.org website to AWS as well, including the database, metadata update workers, etc. This makes it much easier to build a highly-available setup, where machines can be rebooted or even rebuilt safely without bringing down the whole site.
