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wp_tinycolor_hsl_to_rgb( array $hsl_color ): array

Since
5.8.0
Source
wp-includes/deprecated.php:4958
Converts an HSL object to an RGB object with converted and rounded values.

Description

Direct port of TinyColor's function, lightly simplified to maintain consistency with TinyColor.

Compatibility

Deprecated in WordPress 6.3.0. Kept for back-compatibility; avoid it in new code.

WordPress
since 5.8.0
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

$hsl_colorarray
HSL object.

Return value

array
Rounded and converted RGB object.

Performance profile

How much work a call to wp_tinycolor_hsl_to_rgb() 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
39–63

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 70.

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 it touches

  • hookthird-party callbacksdo_action()one call below wp_tinycolor_hsl_to_rgb()

Further down the call graph this can also reach query, option, cache, serialize and transient. Those are the worst case, several calls deep and usually down an error path, not what a normal call pays.

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

WhenInstructionsCalls it makes
$s === 039_deprecated_function(), wp_tinycolor_bound01(), wp_tinycolor_bound01(), wp_tinycolor_bound01()
$s !== 063_deprecated_function(), wp_tinycolor_bound01(), wp_tinycolor_bound01(), wp_tinycolor_bound01(), wp_tinycolor_hue_to_rgb(), wp_tinycolor_hue_to_rgb(), wp_tinycolor_hue_to_rgb()

Across PHP versions

PHPCompiledExecutedBranchesNotes
8.6-dev7039–632
8.57039–632
8.47039–632
8.37039–632
8.27039–632
8.17039–6322 fewer instructions than PHP 7.4
7.47239–642

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 · 3

Used by · 1

  • wp_tinycolor_string_to_rgb()Parses hex, hsl, and rgb CSS strings using the same regex as TinyColor v1.4.2 used in the JavaScript. Only colors output from react-color are implemented.

Source code

function wp_tinycolor_hsl_to_rgb( $hsl_color ) {	_deprecated_function( __FUNCTION__, '6.3.0' ); 	$h = wp_tinycolor_bound01( $hsl_color['h'], 360 );	$s = wp_tinycolor_bound01( $hsl_color['s'], 100 );	$l = wp_tinycolor_bound01( $hsl_color['l'], 100 ); 	if ( 0 === $s ) {		// Achromatic.		$r = $l;		$g = $l;		$b = $l;	} else {		$q = $l < 0.5 ? $l * ( 1 + $s ) : $l + $s - $l * $s;		$p = 2 * $l - $q;		$r = wp_tinycolor_hue_to_rgb( $p, $q, $h + 1 / 3 );		$g = wp_tinycolor_hue_to_rgb( $p, $q, $h );		$b = wp_tinycolor_hue_to_rgb( $p, $q, $h - 1 / 3 );	} 	return array(		'r' => $r * 255,		'g' => $g * 255,		'b' => $b * 255,	);}

Changelog

Introduced in 5.8.0. 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.

6.3.0
Deprecated.from the docblock
5.8.0
Introduced.from the docblock

About this page

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