wp-includes/blocks/search.php:224Builds the correct top level classnames for the 'core/search' block.
$attributesarraystringfunction classnames_for_block_core_search( $attributes ) { $classnames = array(); if ( ! empty( $attributes['buttonPosition'] ) ) { if ( 'button-inside' === $attributes['buttonPosition'] ) { $classnames[] = 'wp-block-search__button-inside'; } if ( 'button-outside' === $attributes['buttonPosition'] ) { $classnames[] = 'wp-block-search__button-outside'; } if ( 'no-button' === $attributes['buttonPosition'] ) { $classnames[] = 'wp-block-search__no-button'; } if ( 'button-only' === $attributes['buttonPosition'] ) { $classnames[] = 'wp-block-search__button-only wp-block-search__searchfield-hidden'; } } if ( isset( $attributes['buttonUseIcon'] ) ) { if ( ! empty( $attributes['buttonPosition'] ) && 'no-button' !== $attributes['buttonPosition'] ) { if ( $attributes['buttonUseIcon'] ) { $classnames[] = 'wp-block-search__icon-button'; } else { $classnames[] = 'wp-block-search__text-button'; } } } return implode( ' ', $classnames );}Introduced in 5.6.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/blocks/search.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.