Fires when submitting registration form data, before the user is created.
user_registration_email
Filters the email address of a user being registered.
email_exists
Determines whether the given email exists.
do_robots
Fired when the template loader determines a robots.txt request.
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add_rewrite_endpoint
Add an endpoint, like /trackback/.
add_feed
Add a new feed type like /atom1/.
add_rewrite_tag
Add a new rewrite tag (like %postname%).
add_rewrite_rule
Adds a rewrite rule that transforms a URL structure to a set of query vars.
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wp_old_slug_redirect
Redirect old slugs to the correct permalink.
is_robots
Is the query for the robots.txt file?
wp_redirect
Filters the redirect location.
check_ajax_referer
Fires once the Ajax request has been validated or not.
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is_wp_error
Check whether variable is a WordPress Error.
wp_unregister_GLOBALS
Turn register globals off.
_get_page_link
Filters the permalink for a non-page_on_front page.