wp_cache_delete_multiple( array $keys, string $group = '' ): bool[]
- Since
- 6.0.0
- Source
wp-includes/cache-compat.php:116
Description
Compat function to mimic wp_cache_delete_multiple().
Compatibility
- WordPress
- since 6.0.0
- 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
$keysarray- Array of keys under which the cache to deleted.
$groupstringoptional- Where the cache contents are grouped. Default empty.Default:
''
Return value
bool[]- Array of return values, grouped by key. Each value is either true on success, or false if the contents were not deleted.
Performance profile
How much work a call to wp_cache_delete_multiple() 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
- Moderate
- Scaling
- Scales with input
- Instructions
- 6–7
- Plugin surface
- None
- Called by
- 8
Only touches the object cache, via wp_cache_delete_multiple().
The body loops, so the work grows with what you pass in.
Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 14.
Nothing here hands control to plugin code.
8 places in core call this, so the cost is paid more often than your own code shows.
What it touches
- cacheobject cache
wp_cache_delete_multiple()this function does it
What one call costs · 1 distinct outcome
One number would be a lie: the work depends on which branch runs. These are every distinct cost wp_cache_delete_multiple() can have, taken from its control-flow graph on PHP 8.5.
| When | Instructions | Calls it makes |
|---|---|---|
| always | 6–7 | none |
Across PHP versions
Compiles the same on PHP 7.4, 8.1, 8.2, 8.3, 8.4, 8.5 and 8.6-dev: 14 instructions, 6–7 executed per call, 2 branches. The work does not change between versions.
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 · 1
- wp_cache_delete()Removes the cache contents matching key and group.
Used by · 8
- _clear_modified_cache_on_transition_comment_status()Clears the lastcommentmodified cached value when a comment status is changed.
- clean_comment_cache()Removes a comment from the object cache.
- clean_network_cache()Removes a network from the object cache.
- clean_object_term_cache()Removes the taxonomy relationship to terms from the cache.
- clean_term_cache()Removes all of the term IDs from the cache.
- delete_metadata()Deletes metadata for the specified object.
- wp_insert_comment()Inserts a comment into the database.
- wp_set_option_autoload_values()Sets the autoload values for multiple options in the database.
Source code
function wp_cache_delete_multiple( array $keys, $group = '' ) { $values = array(); foreach ( $keys as $key ) { $values[ $key ] = wp_cache_delete( $key, $group ); } return $values; }Changelog
Introduced in 6.0.0. 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 6.7.7 tag, from
src/wp-includes/cache-compat.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.