Sorting by user defined date

[epp_b]

I need to sort an array whose values will contain dates. However it's not as simple as having a date which is only numbers. The typical format this date will be in is:

Monday, April 28th

However, this date will be user defined, so it may just as well be

04/29/03

So, the array will be something like:

$date[] = "Monday, April 28th";
$date[] = "Thursday, May 1st";
$date[] = "Wed., Apr. 30";
$date[] = "04/29/03";

Is there any way to sort these in chronological order?
Anybody have a usort() function for this?

[Daveyz1983]

Looking at your requirement, I would advise you to take a look @ strtotime() to readup on how to convert a string containing english formatted dates to Unix time stamps.

From there you can then do a simple sort by comparing the time stamps.

Note: There are a hundred and thousands of ways of writing a date in human-readable format. therefore its still advisable to restrict what type of format can the user input.