wp_generate_user_request_key()

wp_generate_user_request_key( int $request_id ): string

function wp_generate_user_request_key( $request_id ) {
	// Generate something random for a confirmation key.
	$key = wp_generate_password( 20, false );

	// Save the key, hashed.
	wp_update_post(
		array(
			'ID'            => $request_id,
			'post_status'   => 'request-pending',
			'post_password' => wp_fast_hash( $key ),
		)
	);

	return $key;
}