WP_Style_Engine::compile_stylesheet_from_css_rules( WP_Style_Engine_CSS_Rule[] $css_rules, array $options = array() ): string

Compatibility

Present in every tracked release (6.7.7 to 7.1.0), and compiles on PHP 7.4 through 8.6-dev.

Parameters

$css_rulesWP_Style_Engine_CSS_Rule[]

An array of WP_Style_Engine_CSS_Rule objects from a store or otherwise.

$optionsarrayoptional

An array of options. Default empty array.Default: array()

• $contextstring|nulldefault: 'block-supports'. When set, the style engine will attempt to store the CSS rules

  An identifier describing the origin of the style object, e.g. 'block-supports' or 'global-styles'.

• $optimizebooldefault: false

  Whether to optimize the CSS output, e.g. combine rules.

• $prettifybool

  Whether to add new lines and indents to output. Defaults to whether the SCRIPT_DEBUG constant is defined.

Return value

string

A compiled stylesheet from stored CSS rules.

Performance profile

How much work a call to WP_Style_Engine::compile_stylesheet_from_css_rules() 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

12

Executed per call on PHP 8.5. The body compiles to 12.

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 · 1 distinct outcome

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

Uses · 1

• WP_Style_Engine_Processor::__construct()

Used by · 2

• wp_style_engine_get_stylesheet_from_context()Returns compiled CSS from a store, if found.
• wp_style_engine_get_stylesheet_from_css_rules()Returns compiled CSS from a collection of selectors and declarations.

Source code

View on Trac ↗View on GitHub ↗

805	public static function compile_stylesheet_from_css_rules( $css_rules, $options = array() ) {806		$processor = new WP_Style_Engine_Processor();807		$processor->add_rules( $css_rules );808		return $processor->get_css( $options );809	}

Changelog

Introduced in 6.1.0. 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 7.1.0 tag, from src/wp-includes/style-engine/class-wp-style-engine.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.

Corrections

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