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WordPress

WP_Site_Icon::intermediate_image_sizes( string[] $sizes = array() ): string[]

Since
4.3.0
Source
wp-admin/includes/class-wp-site-icon.php:189
Adds Site Icon sizes to the array of image sizes on demand.

Compatibility

WordPress
since 4.3.0
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

$sizesstring[]optional
Array of image size names.Default: array()

Return value

string[]
Array of image size names.

Performance profile

How much work a call to WP_Site_Icon::intermediate_image_sizes() 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
Light

Touches nothing outside its own arguments.

Scaling
Scales with input

The body loops, so the work grows with what you pass in.

Instructions
13–14

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 18.

Plugin surface
1 hook

Third-party callbacks on 'site_icon_image_sizes' run inside this call, and their cost is not bounded by anything here.

Called by
0

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

What it touches

  • hookthird-party callbacksapply_filters()called directly

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

WhenInstructionsCalls it makes
always13–14apply_filters()

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, 13–14 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.

Hooks and filters fired · 1

One hook fires while WP_Site_Icon::intermediate_image_sizes() runs, in this order:

  1. apply_filters( site_icon_image_sizes )filterline 191 (+2 into the body)

    Filters the different dimensions that a site icon is saved in.

Uses · 1

  • apply_filters()Calls the callback functions that have been added to a filter hook.

Source code

View on Trac View on GitHub 

	public function intermediate_image_sizes( $sizes = array() ) {		/** This filter is documented in wp-admin/includes/class-wp-site-icon.php */		$this->site_icon_sizes = apply_filters( 'site_icon_image_sizes', $this->site_icon_sizes );		foreach ( $this->site_icon_sizes as $size ) {			$sizes[] = 'site_icon-' . $size;		} 		return $sizes;	}

Changelog

Introduced in 4.3.0. 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 6.9.7 tag, from src/wp-admin/includes/class-wp-site-icon.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.
Corrections
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