came across it while looking for more compact ways to serialize data
I wanted something like perl's storable but wanted to also be able to use the same data in php
seems to be nice and compact when serializing multi-level hashes/assoc arrays/etc
(its a binary format that is more compact than json, etc)
trying it with this in perl:
(nice easy cpan install)
and in php:
thats a pure php version.
theres also another implementation (a php extension) which might be faster but wanted to try it before going to the hassle of installing php extensions.