I am facing a big trouble when integrating PayPal Express Checkout in classic ASP.
The code provided by PayPal at the "PayPal Integration Wizard" works perfectly when run without Option Explicit.
When I put into my coding pages and call to the functions provided, I am facing big trouble: My existing pages all use Option Explicit.
This results in me having to manually declare all variables in the PayPal functions.
The sample PayPal functions consist of many array/list/object/index for setting up the name/value pairs necessary to call the PayPal site. It is totally not easy for me to change it over to all correct declaration, since I am not ASP expert and project deadline is tight.
Can anyone give me some advice?
It seems to be possible to mix "Option Explicit"-code with non-"Option Explicit"-code via the Execute statement.
Here's a small test I just made with VBScript (which applies to classic ASP as well):
''#vb1.vbs (i.e. "your code")
Option Explicit
Dim fso, vb2, txt
Set fso = CreateObject("Scripting.FileSystemObject")
Set vb2 = fso.OpenTextFile("vb2.vbs", 1)
txt = vb2.ReadAll
MsgBox txt ''# Message 1
Execute txt
MsgBox foo ''# Message 2
and
''# vb2.vbs (i.e. "their code")
j = 100
Function foo
k = 100
foo = j + k
End Function
Results in:
Message 1: (equal to the contents of vb2.vbs)
Message 2: 200
I have no idea if this is the best way to do it, but currently I can think of no better way. Give it a try.
Beware of namespace clashes through global variables or function names in "their code".