On the ThinkPHP blog today, Annika Rabea shares a method for outputting dates in words rather than in the usual numbers most applications use.
Recently, I have to output the age of a date in words and didn't have a framework to work with. The first steps were to parse the given date into an array and create a timestamp with the individual parts. The difference between the timestamp of now and the created timestamp yielded the age in seconds. The result can be used to compare with seconds of a day, week, etc.
The code snippet in the post outputs the difference between two timestamps (then and now) it a bit more friendly way (ex. 4 months, 2 weeks, 2 days).