Hi,

when using output buffering, i realized that hhvm's return value of ob_get_status() differs from php's return value.

Example Code:

ob_start();
print_r(ob_get_status(true));

Output for hhvm-3.0.1

Array ( )

Output for php >= 5.4.0

Array ( 
    [0] => Array (
        [name] => default output handler
        [type] => 0
        [flags] => 112
        [level] => 0
        [chunk_size] => 0
        [buffer_size] => 16384
        [buffer_used] => 0 
  )
)

So hhvm's output misses the first level.
If you have more than one level of output buffers running, hhvm always shows one level less than php.

Example with 1 level, as included above (hhvm shows 0):
http://3v4l.org/aa2Fp

Example with 3 levels (hhvm shows only 2):
http://3v4l.org/tgrrM

Best regards
Matthias