Determines whether the query is for an existing author archive page.
is_archive
Determines whether the query is for an existing archive page.
query_posts
Sets up The Loop with query parameters.
get_query_var
Retrieve variable in the WP_Query class.
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auth_redirect
Checks if a user is logged in, if not it redirects them to the login page.
wp_logout
Fires after a user is logged-out.
wp_clearcookie
Clears the authentication cookie, logging the user out. This function is deprecated.
wp_setcookie
Sets a cookie for a user who just logged in. This function is deprecated.
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form_option
Prints option value after sanitizing for forms.
option_{$option}
Filters the value of an existing option.
pre_option_{$option}
Filters the value of an existing option before it is retrieved.
get_option
Retrieves an option value based on an option name.
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get_pagenum_link
Retrieves the link for a page number.
next_post_link
Displays the next post link that is adjacent to the current post.
previous_post_link
Displays the previous post link that is adjacent to the current post.
