PHP Optimization

PHP is the runtime that executes WordPress core, themes, and plugins for any request that is not served from page cache. This module covers practical PHP settings (especially OPcache) that reduce CPU load and stabilize dynamic requests.

Lesson	Description
Optimization Foundation	How PHP execution works in common WordPress stacks
PHP Versions	Choosing a supported PHP version and understanding tradeoffs
OPcache Tuning	Size OPcache correctly and avoid common misconfigurations
OPcache Preloading	When preloading helps and how to implement it safely
JIT Compilation	What PHP JIT is and why it rarely helps typical WordPress