wp_render_block_states_support( string $block_content, array $block ): string

Compatibility

Present in 1 of the 5 tracked releases, added in 7.1.0, and compiles on PHP 7.4 through 8.6-dev.

Parameters

$block_contentstring

The block's rendered HTML.

$blockarray

The block data including blockName and attrs.

Return value

string

Modified block content with injected state styles.

Performance profile

How much work a call to wp_render_block_states_support() 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

Moderate

Only touches the object cache, via wp_cache_get().

Scaling

Scales with input

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

Instructions

5–67

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 273.

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

• cacheobject cachewp_cache_get()one call below wp_render_block_states_support()

Further down the call graph this can also reach hook, option, serialize, query 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 · 5 distinct outcomes

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

Uses · 16

• wp_get_global_settings()Gets the settings resulting of merging core, theme, and user data.
• wp_get_block_state_style_rules()Builds compiled state style rules, preserving the selector each rule targets.
• wp_get_root_state_style()Returns a style object with nested state keys removed.
• wp_get_block_state_element_selectors()Generates all element selectors for a block root selector.
• wp_get_block_css_selector()Determines the CSS selector for the block type and property provided, returning it if available.
• wp_add_block_state_style_rule()Adds a compiled state style rule to a rule list.
• wp_get_block_state_unique_class()Returns a unique class for a set of state style rules.
• wp_get_state_declarations_with_background_resets()Adds background reset declarations to prevent gradient/solid color conflicts.
• wp_build_state_selector()Builds a scoped selector from a block selector and optional pseudo-state.
• wp_get_state_declarations_with_fallback_border_styles()Adds fallback border-style declarations for visible border declarations.
• wp_style_engine_get_stylesheet_from_css_rules()Returns compiled CSS from a collection of selectors and declarations.
• WP_Block_Type_Registry::get_instance()::get_registered()

Source code

View on Trac ↗View on GitHub ↗

540function wp_render_block_states_support( $block_content, $block ) {541	if ( empty( $block['blockName'] ) || empty( $block_content ) ) {542		return $block_content;543	}544 545	$block_name = $block['blockName'];546	$block_type = WP_Block_Type_Registry::get_instance()->get_registered( $block_name );547	if ( ! $block_type ) {548		return $block_content;549	}550 551	$supported_pseudo_states  = WP_Theme_JSON::VALID_BLOCK_PSEUDO_SELECTORS[ $block_name ] ?? array();552	$style                    = $block['attrs']['style'] ?? array();553	$css_rules                = array();554	$viewport_settings        = wp_get_global_settings( array( 'viewport' ) );555	$responsive_media_queries = WP_Theme_JSON::get_viewport_media_queries( $viewport_settings );556 557	foreach ( $supported_pseudo_states as $pseudo_state ) {558		if ( empty( $style[ $pseudo_state ] ) || ! is_array( $style[ $pseudo_state ] ) ) {559			continue;560		}561 562		$css_rules = array_merge(563			$css_rules,564			wp_get_block_state_style_rules(565				array( $pseudo_state => $style[ $pseudo_state ] ),566				$block_type567			)568		);569	}570 571	foreach ( $responsive_media_queries as $breakpoint => $media_query ) {572		if ( empty( $style[ $breakpoint ] ) || ! is_array( $style[ $breakpoint ] ) ) {573			continue;574		}575 576		$root_state_style = wp_get_root_state_style(577			$style[ $breakpoint ],578			array_merge( array( 'elements' ), $supported_pseudo_states )579		);580 581		if ( ! empty( $root_state_style ) ) {582			$css_rules = array_merge(583				$css_rules,584				wp_get_block_state_style_rules(585					array( '' => $root_state_style ),586					$block_type,587					$media_query588				)589			);590		}591 592		if (593			! empty( $style[ $breakpoint ]['elements'] ) &&594			is_array( $style[ $breakpoint ]['elements'] )595		) {596			$element_selectors = wp_get_block_state_element_selectors(597				wp_get_block_css_selector( $block_type )598			);599 600			foreach ( $style[ $breakpoint ]['elements'] as $element_name => $element_style ) {601				if (602					empty( $element_style ) ||603					! is_array( $element_style ) ||604					empty( $element_selectors[ $element_name ] )605				) {606					continue;607				}608 609				$element_pseudo_states = WP_Theme_JSON::VALID_ELEMENT_PSEUDO_SELECTORS[ $element_name ]610					?? array();611				$root_element_style    = wp_get_root_state_style(612					$element_style,613					$element_pseudo_states614				);615 616				wp_add_block_state_style_rule(617					$css_rules,618					'',619					$element_selectors[ $element_name ],

Changelog

Introduced in 7.1.0.

Signature, return type and hooks compared across 1 parsed release.

About this page

Parsed data

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

Corrections

Something wrong on this page? Report it and it gets fixed in the next regeneration.