ob_get_status — Get status of output buffers
ob_get_status(bool $full_status = false): array
ob_get_status() returns status information on either the top level output buffer or all active output buffer levels if full_status is set to true.
Array
(
[level] => 2
[type] => 0
[status] => 0
[name] => URL-Rewriter
[del] => 1
)