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

Your regex needs delimiters:

/(0[1-9]|1[012])[- \/.](0[1-9]|[12][0-9]|3[01])[- \/.](19|20)\d\d/