wppaste
WordPress

redirect_this_site( array|string $deprecated = '' ): string[]

Since
MU (3.0.0)
Source
wp-includes/ms-functions.php:2128
Ensures that the current site's domain is listed in the allowed redirect host list.

Compatibility

WordPress
since MU (3.0.0)
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

$deprecatedarray|stringoptional
Not used.Default: ''

Return value

string[]
An array containing the current site's domain.

  • $0string

    The current site's domain.

Performance profile

How much work a call to redirect_this_site() 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
6

Executed per call on PHP 8.5. The body compiles to 6.

Plugin surface
None

Nothing here hands control to plugin code.

Called by
0

Nothing in core calls this; the cost is only what you spend yourself.

What it touches

  • hookthird-party callbacksapply_filters()one call below redirect_this_site()

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 redirect_this_site() can have, taken from its control-flow graph on PHP 8.5.

WhenInstructionsCalls it makes
always6get_network()

Across PHP versions

Compiles the same on PHP 7.4, 8.1, 8.2, 8.3, 8.4, 8.5 and 8.6-dev: 6 instructions, 6 executed per call, 0 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

  • get_network()Retrieves network data given a network ID or network object.

Source code

View on Trac View on GitHub 

function redirect_this_site( $deprecated = '' ) {	return array( get_network()->domain );}

Changelog

Introduced in MU (3.0.0). 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 7.0.4 tag, from src/wp-includes/ms-functions.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.
Corrections
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