When was the First Version of WordPress Released?
WordPress was released on May 27, 2003, by its founders, American developer Matt Mullenweg and English developer Mike Little, as a fork of b2/cafelog. The software is released under the…
Difference between Action Hook and Filter Hook in WordPress
Hooks are the real power and the magic of WordPress. The Action Hooks add new functionality (using add_action()), while Filter Hooks manipulate the post content (using add_filter()). add_action( 'init', array(…
What is the difference between $wpdb and WP_Query?
$wpdb is a PHP global variable that holds the WordPress database object, which is actually an instantiation of the wpdb class. WP_Query actually uses wpdb to query the database. Use…
What is $wpdb in WordPress and How to Use it for Database Security
$wpdb is a PHP global variable that holds the WordPress database object, which is actually an instantiation of the wpdb class. $wpdb is used to manipulate custom database tables with…