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WP_AI_Client_Cache::ttl_to_seconds( null|int|DateInterval $ttl ): int

Since
7.0.0
Source
wp-includes/ai-client/adapters/class-wp-ai-client-cache.php:208
Converts a PSR-16 TTL value to seconds for WordPress cache functions.

Compatibility

WordPress
since 7.0.0
PHP
7.4–8.6-dev
  • 6.7.7
  • 6.8.8
  • 6.9.7
  • 7.0.4
  • 7.1.0

Present in 2 of the 5 tracked releases, added in 7.0.0, and compiles on PHP 7.4 through 8.6-dev.

Parameters

$ttlnull|int|DateInterval
The TTL value.

Return value

int
The TTL in seconds, or 0 for no expiration.

Performance profile

How much work a call to WP_AI_Client_Cache::ttl_to_seconds() 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
Trivial

Touches nothing outside its own arguments.

Scaling
Constant

No loop in the body: the same number of instructions runs whatever you pass in.

Instructions
4–20

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 25.

Plugin surface
None

Nothing here hands control to plugin code.

Called by
2

2 places in core call this, so the cost is paid more often than your own code shows.

What one call costs · 2 distinct outcomes

One number would be a lie: the work depends on which branch runs. These are every distinct cost WP_AI_Client_Cache::ttl_to_seconds() can have, taken from its control-flow graph on PHP 8.5.

WhenInstructionsCalls it makes
always4–9none
$ttl !== null && $ttl instanceof20->add(), ->getTimestamp(), ->getTimestamp()

Across PHP versions

PHPCompiledExecutedBranchesNotes
8.6-dev254–202
8.5254–202
8.4254–2023 fewer instructions than PHP 8.3
8.3284–202
8.2284–202
8.1284–202
7.4284–202

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 · 2

  • DateTime::__construct()
  • clone $now::add()

Used by · 2

Source code

View on Trac View on GitHub 

	private function ttl_to_seconds( $ttl ): int {		if ( null === $ttl ) {			return 0;		} 		if ( $ttl instanceof DateInterval ) {			$now = new DateTime();			$end = ( clone $now )->add( $ttl ); 			return $end->getTimestamp() - $now->getTimestamp();		} 		return max( 0, (int) $ttl );	}

Changelog

Introduced in 7.0.0. Unchanged from 7.0.4 through 7.1.0.

  1. 7.0.4
  2. 7.1.0

Signature, return type and hooks compared across 2 parsed releases.

About this page

Parsed data
Generated from the wordpress-develop 7.1.0 tag, from src/wp-includes/ai-client/adapters/class-wp-ai-client-cache.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.
Corrections
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