Help needed in Regular Expressions

[Anon]

I have this piece of code written in ASP.
Function sFormatCSVDetails(ByVal sStrLine, ByRef aStrAtr)
Dim oRe
Dim oMatch ' MatchCollection
Dim sMatch
Dim iCnt
Dim sDetails

sFormatCSVDetails = False

Set oRe = CreateObject("VBScript.RegExp")
Set oMatch = CreateObject("VBScript.RegExp")
oRe.Global = True
oRe.Pattern = "(""([^""]|"""")*""|[^,]*),"

Set oMatch = oRe.Execute(sStrLine)

If ( oMatch.Count <> UBound(aStrAtr) ) Then Exit Function

oRe.Pattern = "(""*""),"

iCnt = 1
For Each sMatch In oMatch
	sDetails = sMatch.Value
	If ( oRe.Test(sDetails) ) Then
		aStrAtr(iCnt) = Replace(Mid(sDetails, 2,Len(sDetails) - 3),"""""","""")
	Else
		aStrAtr(iCnt) = Left(sDetails, Len(sDetails) - 1)
	End If
	iCnt = iCnt + 1
next

sFormatCSVDetails = True

End Function

I want this code to convert to PHP but not able to understand the Regular Expression is there someone who can really help me.Its really very urgent.

Garry