wp-includes/category.php:260Sanitizes category data based on context.
$categoryobject|array$contextstringoptional'display'object|arrayfunction sanitize_category( $category, $context = 'display' ) { return sanitize_term( $category, 'category', $context );}Introduced in 2.3.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/category.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.