_prime_term_caches( array $term_ids, bool $update_meta_cache = true )
- Since
- 4.6.0, 6.1.0, 6.3.0
- Source
wp-includes/taxonomy.php:4114
Compatibility
- WordPress
- since 6.3.0
- PHP
- 7.4–8.6-dev
- 6.7.7
- 6.8.8
- 6.9.7
- 7.0.4
- 7.1.0
Present in every tracked release (6.7.7 to 7.1.0), and compiles on PHP 7.4 through 8.6-dev.
Parameters
$term_idsarray- Array of term IDs.
$update_meta_cachebooloptional- Whether to update the meta cache. Default true.Default:
true
Performance profile
How much work a call to _prime_term_caches() does, and what it touches: the algorithmic scaling, the Zend instruction count per call across PHP versions, the hooks it hands control to, and the core code that calls it. Measured from the compiled opcodes, not a stopwatch, so every number is identical on any machine running the same PHP version, and every function in core is ranked by cost.
- Cost class
- Heavy
- Scaling
- Constant
- Instructions
- 12–38
- Plugin surface
- None
- Called by
- 3
Reaches the database via ->get_results().
No loop in the body: the same number of instructions runs whatever you pass in.
Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 38.
Nothing here hands control to plugin code.
3 places in core call this, so the cost is paid more often than your own code shows.
What it touches
- sqldatabase query
->get_results()called directly - cacheobject cache
wp_cache_get_multiple()one call below _prime_term_caches()
What one call costs · 4 distinct outcomes
One number would be a lie: the work depends on which branch runs. These are every distinct cost _prime_term_caches() can have, taken from its control-flow graph on PHP 8.5.
| When | Instructions | Calls it makes |
|---|---|---|
empty($non_cached_ids) | 12 | _get_non_cached_ids() |
empty($non_cached_ids) | 15 | _get_non_cached_ids(), wp_lazyload_term_meta() |
!empty($non_cached_ids) | 35 | _get_non_cached_ids(), array_map(), sprintf(), ->get_results(), update_term_cache() |
!empty($non_cached_ids) | 38 | _get_non_cached_ids(), array_map(), sprintf(), ->get_results(), update_term_cache(), wp_lazyload_term_meta() |
Across PHP versions
| PHP | Compiled | Executed | Branches | Notes |
|---|---|---|---|---|
| 8.6-dev | 38 | 12–38 | 2 | |
| 8.5 | 38 | 12–38 | 2 | |
| 8.4 | 38 | 12–38 | 2 | 3 fewer instructions than PHP 8.3 |
| 8.3 | 41 | 12–41 | 2 | |
| 8.2 | 41 | 12–41 | 2 | |
| 8.1 | 41 | 12–41 | 2 | |
| 7.4 | 41 | 12–41 | 2 |
An instruction is not a fixed amount of time, so a matching count is not necessarily the same speed; what it rules out is a difference in the work itself.
Uses · 3
- _get_non_cached_ids()Retrieves IDs that are not already present in the cache.
- update_term_cache()Updates terms in cache.
- wp_lazyload_term_meta()Queue term meta for lazy-loading.
Used by · 3
- WP_Term_Query::get_terms()Retrieves the query results.
- get_object_term_cache()Retrieves the cached term objects for the given object ID.
- update_menu_item_cache()Updates post and term caches for all linked objects for a list of menu items.
Source code
function _prime_term_caches( $term_ids, $update_meta_cache = true ) { global $wpdb; $non_cached_ids = _get_non_cached_ids( $term_ids, 'terms' ); if ( ! empty( $non_cached_ids ) ) { $fresh_terms = $wpdb->get_results( sprintf( "SELECT t.*, tt.* FROM $wpdb->terms AS t INNER JOIN $wpdb->term_taxonomy AS tt ON t.term_id = tt.term_id WHERE t.term_id IN (%s)", implode( ',', array_map( 'intval', $non_cached_ids ) ) ) ); update_term_cache( $fresh_terms ); } if ( $update_meta_cache ) { wp_lazyload_term_meta( $term_ids ); }}Changelog
Introduced in 4.6.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
About this page
- Parsed data
- Generated from the wordpress-develop 6.9.7 tag, from
src/wp-includes/taxonomy.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it. - Corrections
- Something wrong on this page? Report it and it gets fixed in the next regeneration.