It seemed fitting that my post on Friday the 13th would be about Friday the 13th. There are 52 Fridays in 2013, but only 2 of them are the 13th day of the month (September and December). To determine if a Friday is a Friday the 13th, we will need to use the
date function along with the
w format that will tell us the day of the week.
w gives us the day of the week starting from zero but as of PHP 5.1.0 you could use
N to get the day of the week starting at 1. I’ll be using
w for backwards compatibility’s sake:
You could simplify this by passing in
time() but for the sake of example, I passed in explicit dates (and converted them to Unix timestamps).
Be safe this Friday the 13th and stay away from Camp Crystal Lake!