Principles of Secure WordPress Code
Security is a very important topic. To secure WordPress, you must have responsible users making use of an instance of WordPress that is only executing secure code (maybe helped by some extra “hardening”) on a secured server. But a compromise of any part of that can invalidate on all your work on any other part. There is no single solution to having a secure WordPress site.
MySQL Basics: Writing Custom SELECT Statements in phpMyAdmin
Here’s probably the oddest analogy I’ll write this month: for many WordPress developers, MySQL is a bit like our spinal column.