What is the MM/DD/YYYY regular expression and how do I use it in php?

Question

I found the regular expression for MM/DD/YYYY at http://www.regular-expressions.info/regexbuddy/datemmddyyyy.html but I don\'t think I am using it correctly.

Here\'s

Answer 1

This checks valid dates from MM/DD/1960 to MM/DD/2014

Also accepts dates like M/D/YYYY and 0M/0D/YYYY

^(?:[1-9]|0[1-9]|1[0-2])/(?:[0-9]|0[1-9]|1[0-9]|2[0-9]|3[0-1])/(?:20[6-9][0-9]|20[0-1][0-4])$