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(…
$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…
$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…
ABSPATH is a PHP constant, which holds the Absolute path to the WordPress directory. It is defined in wp-config.php /** Absolute path to the WordPress directory. */ if ( !…
You can use a hash function, avialable in any operation system, for example sha256sum with a photo or an mp3 file, any file you can easily remember. For example, from…
