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WordPress

WP_Network::_set_cookie_domain()

Since
4.4.0
Source
wp-includes/class-wp-network.php:306
Sets the cookie domain based on the network domain if one has not been populated.

Compatibility

WordPress
since 4.4.0
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.

Performance profile

How much work a call to WP_Network::_set_cookie_domain() 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
3–22

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 24.

Plugin surface
None

Nothing here hands control to plugin code.

Called by
1

1 place 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_Network::_set_cookie_domain() can have, taken from its control-flow graph on PHP 8.5.

WhenInstructionsCalls it makes
!empty($value)3none
empty($value)17–22parse_url()

Across PHP versions

PHPCompiledExecutedBranchesNotes
8.6-dev243–223
8.5243–223
8.4243–2236 fewer instructions than PHP 8.3
8.3303–283
8.2303–283
8.1303–2832 fewer instructions than PHP 7.4
7.4323–293

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

Used by · 1

Source code

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	private function _set_cookie_domain() {		if ( ! empty( $this->cookie_domain ) ) {			return;		}		$domain              = parse_url( $this->domain, PHP_URL_HOST );		$this->cookie_domain = is_string( $domain ) ? $domain : $this->domain;		if ( str_starts_with( $this->cookie_domain, 'www.' ) ) {			$this->cookie_domain = substr( $this->cookie_domain, 4 );		}	}

Changelog

Introduced in 4.4.0. Unchanged from 6.7.7 through 7.1.0.

  1. 6.7.7
  2. 6.8.8
  3. 6.9.7
  4. 7.0.4
  5. 7.1.0

Signature, return type and hooks compared across 5 parsed releases.

About this page

Parsed data
Generated from the wordpress-develop 6.8.8 tag, from src/wp-includes/class-wp-network.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.
Corrections
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