Design Patterns. Part 1: Creational and Structural Patterns.
About design patterns, all programmers have heard. Although... Based on the number of jokes about php developers and seeing some pieces of code, maybe some of them (php developers) have no idea what it is.
SEO in WordPress or how I brought the site out of the "search pit"
In WordPress, there are several popular plugins for SEO: All in One SEO Pack and WordPress SEO by Yoast. The first one is slightly more popular (at the time of writing this note), but it has several significant shortcomings (fortunately, not fatal ones).