Using WordPress ‘pingback()’ PHP function
The `pingback()` function in WordPress is used to notify other websites that their link has been mentioned within a post
HTTPS
Using WordPress ‘permalink_single_rss()’ PHP function
The `permalink_single_rss()` is a WordPress function that generates the URL for an individual item's RSS feed
Using WordPress ‘permalink_link()’ PHP function
Print the permalink of the current post in the loop.
Using WordPress ‘paused_themes_notice()’ PHP function
Renders an admin notice in case some themes have been paused due to errors.
Using WordPress ‘paused_plugins_notice()’ PHP function
Renders an admin notice in case some plugins have been paused due to errors.
Using WordPress ‘parent_post_rel_link()’ PHP function
The `parent_post_rel_link()` function in WordPress generates a relational link for the parent item in a hierarchical post type using the specified link title format
Using WordPress ‘parent_dropdown()’ PHP function
Prints out option HTML elements for the page parents drop-down.
Using WordPress ‘page_template_dropdown()’ PHP function
Prints out option HTML elements for the page templates drop-down.
Using WordPress ‘option_update_filter()’ PHP function
Refreshes the value of the allowed options list available via the ‘allowed_options’ hook.