ColdFusion 9: int and type=“numeric” nasty bug?

Question

I\'ve just experienced a behaviour that defies any logic and could potentially lead to serious issues and was wondering if it was a bug or if the behaviour was itend

Answer 1

You can use regular expressions to find out if there are any non numeric characters in a given form field:

reFind( "[^\d-]", "1 2")

That will match any character that is not a number, not a -

If you want to check only positive numbers, you can use

reFind( "[^\d]", "1 2")    

If this returns true, you do not have an integer.

Answer 2

This is a variation on that theme from the other question. See this code (or run it on cflive.net):

<cfscript>
s = "1 2";
i = int(s);
v = isValid("numeric", s);
d = createOdbcDate(s);
writeDump([s,i,v,d]);
</cfscript>

s converts to 41276 when calling int(), and when using it as an input for createOdbcDate(), we get:

January, 02 2013 00:00:00 +0000

So "1 2" is being interpreted as "m d", with an implied year of the current year.

Which is utterly stupid. But there you go.