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<%
“***** BEGIN FUNCTION AREA *****
“ Formats a given 10 digit number into a nice looking phone number
“ Example: given strNumber of 8005551212 you get (800) 555-1212
Function FormatPhoneNumber(strNumber)
Dim strInput “ String to hold our entered number
Dim strTemp “ Temporary string to hold our working text
Dim strCurrentChar “ Var for storing each character for eval.
Dim I “ Looping var
“ Uppercase all characters for consistency
strInput = UCase(strNumber)
“ To be able to handle some pretty bad formatting we strip out
“ all characters except for chars A to Z and digits 0 to 9
“ before proceeding. I left in the chars for stupid slogan
“ numbers like 1-800-GET-CASH etc...
For I = 1 To Len(strInput)
strCurrentChar = Mid(strInput, I, 1)
“ Numbers (0 to 9)
If Asc("0") <= Asc(strCurrentChar) And Asc(strCurrentChar) <= Asc("9") Then
strTemp = strTemp & strCurrentChar
End If
“ Upper Case Chars (A to Z)
If Asc("A") <= Asc(strCurrentChar) And Asc(strCurrentChar) <= Asc("Z") Then
strTemp = strTemp & strCurrentChar
End If
Next “I
“ Swap strTemp back to strInput for next set of validation
“ I also clear strTemp just for good measure!
strInput = strTemp
strTemp = ""
“ Remove leading 1 if applicable
If Len(strInput) = 11 And Left(strInput, 1) = "1" Then
strInput = Right(strInput, 10)
End If
“ Error catch to make sure strInput is proper length now that
“ we“ve finished manipulating it.
If Not Len(strInput) = 10 Then
“ Handle errors as you see fit. This script raises a real
“ error so you can handle it like any other runtime error,
“ but you could also pass an error back via the function“s
“ return value or just display a message... your choice!
Err.Raise 1, "FormatPhoneNumber function", _
"The phone number to be formatted must be a valid 10 digit US phone number!"
“ Two alternative error techniques!
“Response.Write "<B>The phone number to be formatted must be a valid phone number!</B>"
“Response.End
“ Note if you use this you“ll also need to check for
“ this below so you don“t overwrite it!
“strTemp = "<B>The phone number to be formatted must be a valid phone number!</B>"
End If
“ If an error occurred then the rest of this won“t get processed!
“ Build the output string formatted to our liking!
“ (xxx) xxx-xxxx
strTemp = "(" “ "("
strTemp = strTemp & Left(strInput, 3) “ Area code
strTemp = strTemp & ") " “ ") "
strTemp = strTemp & Mid(strInput, 4, 3) “ Exchange
strTemp = strTemp & "-" “ "-"
strTemp = strTemp & Right(strInput, 4) “ 4 digit part
“ Set return value
FormatPhoneNumber = strTemp
End Function
“***** END FUNCTION AREA *****
%>
<%“ Runtime Code
Dim strNumberToFormat “ The phone number we pass to the function
“ Retrieve the requested number or set it to the default
If Request.QueryString("phone_number") <> "" Then
strNumberToFormat = Request.QueryString("phone_number")
Else
strNumberToFormat = "1-800-555-1212"
End If
“ We need to turn this on if we want to trap errors.
“ Otherwise the script would generate an error if the input
“ number wasn“t correct.
On Error Resume Next
%>
<TABLE BORDER="1">
<TR>
<TD>Phone number before formatting:</TD>
<TD><%= strNumberToFormat %></TD>
</TR>
<TR>
<TD>Phone number after formatting:</TD>
<TD>
<%
“ Call the function and output the results
Response.Write FormatPhoneNumber(strNumberToFormat)
“ Check for an error and display the message if one occurred
If Err.number Then Response.Write Err.description
%>
</TD>
</TR>
</TABLE>
<FORM ACTION="39.asp" METHOD="get">
Phone number to format: <INPUT TYPE="text" NAME="phone_number" VALUE="<%= strNumberToFormat %>">
<INPUT type="submit" value="Submit">
</FORM>
