This function’s access is marked private. This means it is not intended for use by plugin or theme developers, only in other core functions. It is listed here for completeness.

_wp_personal_data_cleanup_requests()

Cleans up failed and expired requests before displaying the list table.

Source

File: wp-admin/includes/user.php 

function _wp_personal_data_cleanup_requests() {
	/** This filter is documented in wp-includes/user.php */
	$expires        = (int) apply_filters( 'user_request_key_expiration', DAY_IN_SECONDS );

	$requests_query = new WP_Query( array(
		'post_type'      => 'user_request',
		'posts_per_page' => -1,
		'post_status'    => 'request-pending',
		'fields'         => 'ids',
		'date_query'     => array(
			array(
				'column' => 'post_modified_gmt',
				'before' => $expires . ' seconds ago',
			),
		),
	) );

	$request_ids = $requests_query->posts;

	foreach ( $request_ids as $request_id ) {
		wp_update_post( array(
			'ID'            => $request_id,
			'post_status'   => 'request-failed',
			'post_password' => '',
		) );
	}
}

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Related

Changelog

Changelog
Version Description
WP-4.9.6 Introduced.