VBScript 5.0

The RegExp object is used to search for and match string patterns in another string.

A Match object is created each time the RegExp object finds a match. Since, zero or more matches could be made, the RegEXp object actually return a collection of Match objects which is refered to as a Matches collection.

The following code is a simplier, working version of a program published by Microsoft.

Code:
<%
'this sub finds the matches
Sub RegExpTest(strMatchPattern, strPhrase)
    'create variables
    Dim objRegEx, Match, Matches, StrReturnStr
    'create instance of RegExp object
    Set objRegEx = New RegExp

    'find all matches
    objRegEx.Global = True
    'set case insensitive
    objRegEx.IgnoreCase = True
    'set the pattern
    objRegEx.Pattern = strMatchPattern

    'create the collection of matches
    Set Matches = objRegEx.Execute(strPhrase)

    'print out all matches
    For Each Match in Matches
        strReturnStr = "Match found at position "
        strReturnStr = strReturnStr & Match.FirstIndex & ". Match Value is '"
        strReturnStr = strReturnStr & Match.value & "'." & "<BR>" & vbCrLf
        'print
        Response.Write(strReturnStr)
  :  Next
End Sub

'call the subroutine
RegExpTest "is.", "Is1 is2 Is3 is4"
%>

Output:
Match found at position 0. Match Value is 'Is1'.
Match found at position 4. Match Value is 'is2'.
Match found at position 8. Match Value is 'Is3'.
Match found at position 12. Match Value is 'is4'.

PROPERTIES

Global Property
This property is only used with a RegExp object variable and returns a Boolean value. False signifies that a search should only find the first occurrence of a match. True signifies that a search should find all occurrences of a match.

Syntax: object.FirstIndex = [ True | False ]

IgnoreCase Property
This property is only used with a RegExp object variable and returns a Boolean value. False signifies that a search should be case-sensitive (i.e., upper versus lower case). True signifies that a search should ignore case in a match.

Syntax: object.IgnoreCase = [ True | False ]

Pattern Property
This property is the regular expression pattern (string) that is to be matched during the search. It is only used with a RegExp object variable.

Syntax: object.Value = [ SearchPatternString ]

METHODS

Execute Method
This method is used to execute the search.

Syntax: object.Execute

Replace Method
This method is used to replace text found in a regular expression search. Do not confuse this method with the Replace function.

Syntax: RegExp.Replace (String1, String2)

Test Method
This method is used to determine if the search pattern occurs within a specified string. True is returned if the pattern is found. Otherwise, False is returned.

Syntax: RegExp.Execute

Copyright 1999 by Infinite Software Solutions, Inc.
Trademark Information