wp-includes/media.php:23Retrieves additional image sizes.
arrayfunction wp_get_additional_image_sizes() { global $_wp_additional_image_sizes; if ( ! $_wp_additional_image_sizes ) { $_wp_additional_image_sizes = array(); } return $_wp_additional_image_sizes;}Introduced in 4.7.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/media.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.