wp-admin/includes/update.php:221Finds the available update for WordPress core.
$versionstring$localestringobject|falsefunction find_core_update( $version, $locale ) { $from_api = get_site_transient( 'update_core' ); if ( ! isset( $from_api->updates ) || ! is_array( $from_api->updates ) ) { return false; } $updates = $from_api->updates; foreach ( $updates as $update ) { if ( $update->current === $version && $update->locale === $locale ) { return $update; } } return false;}Introduced in 2.7.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-admin/includes/update.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.