wp_cache_set_multiple( array $data, string $group = '', int $expire = 0 ): bool[]
- Since
- 6.0.0
- Source
wp-includes/cache-compat.php:60
Description
Differs from wp_cache_add_multiple() in that it will always write data.
Compat function to mimic wp_cache_set_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
$dataarray- Array of keys and values to be set.
$groupstringoptional- Where the cache contents are grouped. Default empty.Default:
'' $expireintoptional- When to expire the cache contents, in seconds.
Default 0 (no expiration).Default:0
Return value
bool[]- Array of return values, grouped by key. Each value is either true on success, or false on failure.
Performance profile
How much work a call to wp_cache_set_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
- 7–8
- Plugin surface
- None
- Called by
- 4
Only touches the object cache, via wp_cache_set_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 18.
Nothing here hands control to plugin code.
4 places in core call this, so the cost is paid more often than your own code shows.
What it touches
- cacheobject cache
wp_cache_set_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_set_multiple() can have, taken from its control-flow graph on PHP 8.5.
| When | Instructions | Calls it makes |
|---|---|---|
| always | 7–8 | 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: 18 instructions, 7–8 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_set()Saves the data to the cache.
Used by · 4
- WP_AI_Client_Cache::setMultiple()Persists a set of key => value pairs in the cache, with an optional TTL.
- wp_cache_set_multiple_salted()Stores multiple pieces of salted data in the cache.
- wp_prime_network_option_caches()Primes specific network options into the cache with a single database query.
- wp_prime_option_caches()Primes specific options into the cache with a single database query.
Source code
function wp_cache_set_multiple( array $data, $group = '', $expire = 0 ) { $values = array(); foreach ( $data as $key => $value ) { $values[ $key ] = wp_cache_set( $key, $value, $group, $expire ); } 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 7.1.0 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.