I have a db table that contains time in the following format hhmm.
I need to split hour from minutes. I think I can use something like
substr($time, 0, 2);
It works well when my time looks like: 1430, however I'm not sure what to do when I have something like 710.
You can use a negative offset instead, that counts backwards from the end of the string
substr($time, 0, -2);