wp-admin/includes/misc.php:1389Removes single-use URL parameters and create canonical link based on new URL.
One hook fires while wp_admin_canonical_url() runs, in this order:
Filters the admin canonical URL value.
function wp_admin_canonical_url() { $removable_query_args = wp_removable_query_args(); if ( empty( $removable_query_args ) ) { return; } // Ensure we're using an absolute URL. $current_url = set_url_scheme( 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'] ); $filtered_url = remove_query_arg( $removable_query_args, $current_url ); /** * Filters the admin canonical URL value. * * @since 6.5.0 * * @param string $filtered_url The admin canonical URL value. */ $filtered_url = apply_filters( 'wp_admin_canonical_url', $filtered_url ); ?> <link id="wp-admin-canonical" rel="canonical" href="<?php echo esc_url( $filtered_url ); ?>" /> <script> if ( window.history.replaceState ) { window.history.replaceState( null, null, document.getElementById( 'wp-admin-canonical' ).href + window.location.hash ); } </script> <?php}Introduced in 4.2.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-admin/includes/misc.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.