Write to file

[undercloud]

Are you seriously?
https://github.com/webmozart/json/blob/master/src/JsonEncoder.php#L288

How about sharing file between multiple threads? You mush use something like this http://php.net/manual/en/function.flock.php

[undercloud]

http://stackoverflow.com/questions/5479580/is-there-a-risk-in-running-file-put-contents-on-the-same-file-from-different-p

[tgalopin]

I'm pretty sure a PR would be much appreciated :) .