WordPress at Your Fingertips

This article explains how to create and parse CSV files in PHP, including the format, creation of CSV files, reading CSV files, and converting Excel files to CSV.

How to add custom bulk actions to WordPress admin tables and process them using hooks.

Tutorial on how to prevent deactivation of important plugins in WordPress and remove the "deactivate" button and checkbox for specific plugins.

This article explains how to upload files to a server using AJAX and jQuery, with examples for both general use and WordPress integration.

This short article is my attempt to answer the common question — what is better: install a plugin to add desired functionality or add custom code in functions.php?...

Before version 3.5, WordPress had a so-called "blogroll", "bookmarks", "links" - these were entries that had their own separate menu in the admin-panel, just like...

Exploring the use of anonymous PHP functions, also known as closures or lambda functions, in WordPress hooks and discussing their advantages and disadvantages.

WordPress does not allow uploading just anything to the media library—it protects itself. Files of non-standard (not allowed) types cannot be uploaded because WP has a...

This article explains how to create a settings page for a plugin in the WordPress Multisite network admin using the Options API, highlighting the differences from...

This article explains the usage of the ThickBox API for creating modal windows in the WordPress admin area, including examples and parameters for customization.

When uploading a file to WordPress website, WordPress will check the MIME type of the file. Sometimes it's useful to know what the mime file type of a particular file...

Support for page templates ("page" post type) has been unchanged for 12 years. And it helped developers to conveniently create templates for pages, but it has always...

Understanding the difference between declaring PHP constants using the const keyword and the define() function, and the features and limitations of each method.

This article explains how to speed up the WordPress admin panel by disabling aggressive update checks, which often cause slowdowns and performance issues. It provides a...

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...