wp-includes/style-engine/class-wp-style-engine-css-rule.php:164Gets the CSS.
$should_prettifybooloptionalfalse$indent_countintoptional0string public function get_css( $should_prettify = false, $indent_count = 0 ) { $rule_indent = $should_prettify ? str_repeat( "\t", $indent_count ) : ''; $nested_rule_indent = $should_prettify ? str_repeat( "\t", $indent_count + 1 ) : ''; $declarations_indent = $should_prettify ? $indent_count + 1 : 0; $nested_declarations_indent = $should_prettify ? $indent_count + 2 : 0; $suffix = $should_prettify ? "\n" : ''; $spacer = $should_prettify ? ' ' : ''; // Trims any multiple selectors strings. $selector = $should_prettify ? implode( ',', array_map( 'trim', explode( ',', $this->get_selector() ) ) ) : $this->get_selector(); $selector = $should_prettify ? str_replace( array( ',' ), ",\n", $selector ) : $selector; $rules_group = $this->get_rules_group(); $has_rules_group = ! empty( $rules_group ); $css_declarations = $this->declarations->get_declarations_string( $should_prettify, $has_rules_group ? $nested_declarations_indent : $declarations_indent ); if ( empty( $css_declarations ) ) { return ''; } if ( $has_rules_group ) { $selector = "{$rule_indent}{$rules_group}{$spacer}{{$suffix}{$nested_rule_indent}{$selector}{$spacer}{{$suffix}{$css_declarations}{$suffix}{$nested_rule_indent}}{$suffix}{$rule_indent}}"; return $selector; } return "{$rule_indent}{$selector}{$spacer}{{$suffix}{$css_declarations}{$suffix}{$rule_indent}}"; }Introduced in 6.1.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/style-engine/class-wp-style-engine-css-rule.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.