add_rewrite_rule(): Add Custom URL Rewrite Rules in WordPress
Use add_rewrite_rule() with add_rewrite_tag() to add custom URL rewrite rules and query variables in WordPress.
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add_rewrite_tag(): Add Custom URL Rewrite Tags in WordPress
Use add_rewrite_tag() in WordPress to register custom query variables and use them with add_rewrite_rule() in custom URLs.
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How to Remove the if(!isset($GLOBALS[…])) Malware Code from WordPress Themes
How to find and remove the malicious if(!isset($GLOBALS[…])) code injected into WordPress theme files.
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Require Users to Set a Featured Image Before Publishing a Post in WordPress
Use a save_post check in WordPress to block publishing until the editor sets a featured image.
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sanitize_text_field(): Sanitize Form Data in WordPress
Use sanitize_text_field() in WordPress to clean form input and other plain-text strings before saving them.
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The WordPress Researcher Backdoor Plugin: research__plugin.php
A look at the WordPress Researcher backdoor plugin and why research__plugin.php should be removed immediately.
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Automattic Acquires WooCommerce, the Most Popular WordPress Ecommerce Plugin
Matt Mullenweg announced that Automattic acquired WooCommerce, the most popular ecommerce plugin in the WordPress ecosystem.
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Things to Watch Out for When Buying a Premium WordPress Theme
Practical points to consider before buying a premium WordPress theme, from code quality and SEO to support and lifecycle.
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Show Popular Posts from WP-PostViews with a Custom Query
Use a custom WordPress query to display WP-PostViews popular posts with your own markup and extra fields.
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How to Limit the Length of WordPress Comments
Use the preprocess_comment filter to enforce minimum and maximum comment length in WordPress.
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Understanding the WordPress Database Structure and the Relationships Between Its Tables
A detailed introduction to the WordPress database structure, the content types it stores, and the relationships between the core tables.
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How to Display Random Images as a Background in WordPress
Use simple PHP in WordPress to rotate random background images and make text-heavy pages feel more active.
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