wp-includes/blocks.php:2192Filters and sanitizes a parsed block attribute value to remove non-allowable HTML.
$valuestring[]|string$allowed_htmlarray[]|string$allowed_protocolsstring[]optionalarray()$block_contextarrayoptionalnullstring[]|stringfunction filter_block_kses_value( $value, $allowed_html, $allowed_protocols = array(), $block_context = null ) { if ( is_array( $value ) ) { foreach ( $value as $key => $inner_value ) { $filtered_key = filter_block_kses_value( $key, $allowed_html, $allowed_protocols, $block_context ); $filtered_value = filter_block_kses_value( $inner_value, $allowed_html, $allowed_protocols, $block_context ); if ( isset( $block_context['blockName'] ) && 'core/template-part' === $block_context['blockName'] ) { $filtered_value = filter_block_core_template_part_attributes( $filtered_value, $filtered_key, $allowed_html ); } if ( $filtered_key !== $key ) { unset( $value[ $key ] ); } $value[ $filtered_key ] = $filtered_value; } } elseif ( is_string( $value ) ) { return wp_kses( $value, $allowed_html, $allowed_protocols ); } return $value;}Introduced in 5.3.1. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/blocks.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.