_get_non_cached_ids( int[] $object_ids, string $cache_key )

Retrieves IDs that are not already present in the cache.

Parameters

$object_ids

(Required) Array of IDs.

$cache_key

(Required) The cache bucket to check against.

Return

(int[]) Array of IDs not present in the cache.

Source

File: wp-includes/functions.php 

function _get_non_cached_ids( $object_ids, $cache_key ) {
	$clean = array();
	foreach ( $object_ids as $id ) {
		$id = (int) $id;
		if ( !wp_cache_get( $id, $cache_key ) ) {
			$clean[] = $id;
		}
	}

	return $clean;
}

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Related

Uses

Uses
Uses Description
wp-includes/cache.php: wp_cache_get_multiple()

Retrieves multiple values from the cache in one call.

Used By

Used By
Used By Description
wp-includes/pluggable.php: cache_users()

Retrieves info for user lists to prevent multiple queries by get_userdata().
wp-includes/comment.php: _prime_comment_caches()

Adds any comments from the given IDs to the cache that do not already exist in cache.
wp-includes/ms-network.php: _prime_network_caches()

Adds any networks from the given IDs to the cache that do not already exist in cache.
wp-includes/ms-site.php: _prime_site_caches()

Adds any sites from the given IDs to the cache that do not already exist in cache.
wp-includes/post.php: _prime_post_caches()

Adds any posts from the given IDs to the cache that do not already exist in cache.
wp-includes/taxonomy.php: _prime_term_caches()

Adds any terms from the given IDs to the cache that do not already exist in cache.
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Changelog

Changelog
Version Description
6.1.0 This function is no longer marked as "private".
3.4.0 Introduced.