According to WordPress PHP Coding Standards, what kind of PHP tags are allowed?

Which function do you use to enable featured image in WordPress?

What is the query variable that holds the current page number to control page navigation?

If you create a custom form with an email field, you can check if the submitted email is valid using the following WordPress function

What file doesn't contain the current WordPress version?

When you want to view all of the stored data in the $wpdb->prefix.'options' table, you would:

While developing themes , writing ' @package WordPress ' in head comment section of the file is correct.

The 'page-{id}.php' comes before 'page-{slug}.php' in the template hierarchy for a page.

Using user_can() function, which capability will determine an administrator?

How to get current user ?