Loading collection data...
Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
Thats a good idea, beyond testing algorithms or logic knowledge, more like testing basic PHP stdlib knowledge.
I know, I know. It will work up to numbers with 24 digits as is, but such problem its solvable w/o too much brains.
This one is actually a good for PHP devs. In PHP if you know your available DateTime class, this one is VERY easy.
PHP Devs, one of the most common tasks you will need to do in your jobs/careers/projects is work with dates. Embrace DateTime!
Nice defensive programming there!
Almost! you already had the DateTime object, just needed to format it! :D