WP_Styles::print_inline_style( string $handle, bool $display = true ): string|bool

Compatibility

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

Parameters

$handlestring

The style's registered handle.

$displaybooloptional

Whether to print the inline style instead of just returning it. Default true.Default: true

Return value

string|bool

False if no data exists, inline styles if $display is true, true otherwise.

Performance profile

How much work a call to WP_Styles::print_inline_style() 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

10–61

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 68.

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 one call costs · 6 distinct outcomes

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

Uses · 3

• esc_url_raw()Sanitizes a URL for database or redirect usage.
• WP_Styles::get_data()
• WP_HTML_Tag_Processor::__construct()Constructor.

Used by · 1

• WP_Styles::do_item()Processes a style dependency.

Source code

View on Trac ↗View on GitHub ↗

302	public function print_inline_style( $handle, $display = true ) {303		$output = $this->get_data( $handle, 'after' );304 305		if ( empty( $output ) || ! is_array( $output ) ) {306			return false;307		}308 309		if ( ! $this->do_concat ) {310 311			// Obtain the original `src` for a stylesheet possibly inlined by wp_maybe_inline_styles().312			$inlined_src = $this->get_data( $handle, 'inlined_src' );313 314			// If there's only one `after` inline style, and that inline style had been inlined, then use the $inlined_src315			// as the sourceURL. Otherwise, if there is more than one inline `after` style associated with the handle,316			// then resort to using the handle to construct the sourceURL since there isn't a single source.317			if ( count( $output ) === 1 && is_string( $inlined_src ) && strlen( $inlined_src ) > 0 ) {318				$source_url = esc_url_raw( $inlined_src );319			} else {320				$source_url = rawurlencode( "{$handle}-inline-css" );321			}322 323			$output[] = sprintf(324				'/*# sourceURL=%s */',325				$source_url326			);327		}328 329		$output = implode( "\n", $output );330 331		if ( ! $display ) {332			return $output;333		}334 335		$processor = new WP_HTML_Tag_Processor( '<style></style>' );336		$processor->next_tag();337		$processor->set_attribute( 'id', "{$handle}-inline-css" );338		$processor->set_modifiable_text( "\n{$output}\n" );339		echo "{$processor->get_updated_html()}\n";340 341		return true;342	}

Changelog

Introduced in 3.3.0. 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 7.1.0 tag, from src/wp-includes/class-wp-styles.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.

Corrections

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