WordPress at a glance
filter is not described

pre_cache_alloptions filter-hook . WP 4.9.0

Filters all options before caching them.

Usage

add_filter( 'pre_cache_alloptions', 'filter_function_name_5066' );
function filter_function_name_5066( $alloptions ){
	// filter...

	return $alloptions;
}
$alloptions(array)
Array with all options.

Where the hook is called

wp_load_alloptions()
pre_cache_alloptions
wp-includes/option.php 220
$alloptions = apply_filters( 'pre_cache_alloptions', $alloptions );

Where the hook is used (in WP core)

Does not used.