Taxonomies in WordPress
What are taxonomies in WordPress? For those who don't know, and for those who think they know everything about taxonomies, it will be useful to read this article. I'll...
Indexes in MySQL
How indexes work in a MySQL database. Indexes in MySQL (Mysql indexes) are a great tool for optimizing SQL queries. To understand how they work, let's look at working...
Posts in WordPress
In this article, let's talk about WordPress posts, or rather how their structure is arranged in the WordPress engine. There is a lot of information on the Internet...
@import Styles of a Child Theme via PHP
Using child themes in Wordpress is a valid way to modify an existing theme, but the CSS @import directive is slow, so it's worth avoiding.
It takes 200ms to load the...
Pagination for WordPress Post Content
Not everyone knows that in WordPress a single post or page can be divided into several parts, thus organizing the pagination for the post. To do this you need to use...
Debug in WordPress
In development, you need to be able to see where the error is when something suddenly breaks. WordPress has a special debug mode for this. In this post, let's take it...
WP Cron (task scheduler)
Suppose we need some PHP function to be executed after 5 hours. Or we need this function to run every day. The WordPress Cron - Task Scheduler will help to solve...
List of All WordPress Options
Here is the entire list of WordPress options, which are located in the wp_options table. You can see all the options for your site on the hidden admin page...
Metadata in WordPress
Under the word "metadata" in WordPress, there is a huge amount of work and amazing logic, which you can scold and praise at the same time, but one thing you can't take...
How to Fix the WordPress Error 60: SSL certificate problem: certificate has expired
From September 30, 2021, HTTP API requests may stop working on WordPress sites that have a Let's Encrypt certificate...
Constants of WordPress
WordPress is configurable in the admin panel or using hooks (filters, events), and WordPress can also be configured using PHP constants.
You've probably used constants...
Global Variables of WordPress
We often use functions to retrieve some data on a page and are unaware that this data can be taken from global variables. For example, the name of the author on the...
Removing Widgets and Metaboxes from the WordPress Dashboard
To make it more convenient to work in the Wordpress admin, sometimes you need to disable (delete) metaboxes and widgets, In this post let's see how to do it.
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SHORTINIT constant: WordPress environment with minimal load
I was worried about a question: how can I use $wpdb object and site database with which I work, but with minimal loading of WP environment. Sometimes it is...
$wpdb->update — array for $where pframeter
Specified value for $where field will turn into IN ( comma separated array values ) when queried.
You can't specify array for the parameter $where in...