Well, for simplicity's sake, I'd much prefer to just use a regular expression in a validator control. If nobody else has any answers, I'll go with your example.
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Phone number validation using a regular expression
Hey, I'm trying to validate a phone number field on a form, but have minimal knowledge of regular expressions. Here's what I'm currently using as a validation expression: ((\(\d{3}\) ?)|(\d{3}-))?\d{3}-\d{4}
It allows the following formats: (555)555-5555, 555-5555, and 555-5555. However, the number could also be a department number from within the company, in which case I would like to allow just a 4 digit number such as 5555. What alterations would I have to make?
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Answers
Personally, I would probably create a JavaScript (or search for one) that strips out all characters that are not numeric, and then validates that what is left is either 10 digits or 4 digits. This could all be done on the client side.
Also, I noticed that your regular expression seems to recognize all sorts of combinations of numbers as long as there is a hyphen in there somewere...
Is there a regular expression section in EE? Also, this site: http://www.regexlib.com/Se
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by: peterxlanePosted on 2005-10-11 at 10:41:30ID: 15062542
I don't know enough about Regular Expressions to change the expression, but you could put it all in a function and do something like this:
<%
Function ValidatePhone(strNumber)
Dim objRegExpr
Set objRegExpr = New regexp
objRegExpr.Pattern = "((\(\d{3}\) ?)|(\d{3}-))?\d{3}-\d{4}"
objRegExpr.Global = True
objRegExpr.IgnoreCase = True
Dim colMatches
Set colMatches = objRegExpr.Execute(strNumb
If colMatches.Count > 0 Then
ValidatePhone = True
Else
If Len(strNumber) = 4 And IsNumeric(strNumber) Then
ValidatePhone = True
Else
ValidatePhone = False
End If
End If
Set colMatches = Nothing
Set objRegExpr = Nothing
End Function
Response.Write ValidatePhone("444-555-666
Response.Write ValidatePhone("(444)555-66
Response.Write ValidatePhone("55556") & "<br>"
Response.Write ValidatePhone("5555") & "<br>"
Response.Write ValidatePhone("hello") & "<br>"
%>