> -----Original Message-----
> From: Chris Boget [mailto:[EMAIL PROTECTED]]
> Subject: Re: [PHP] Secure eval();
> 
> > Are you sure you have to run it through eval()? It sounds 
> like you're
> > creating a query. Couldn't you just create the query 
> dynamically, then put
> > it in a mysql_query() function? (or whatever DB you're 
> using) Then, even if
> > they try some kung fu on you, it'll just result in a bad 
> query, not some
> > rogue code being executed.
> 
> Try some kung fu?  Never heard it put like that before. :P
> 
> I am kind of creating a query.  The equation is going to look 
> something like
> this:
> 
> (({table1.field1} * {table2.field2}) + {table3.field3})
> 
> Then I'm going to get the values in those fields and parse 
> the above as if they
> were macros (which, in a sense, they are).  That could yield 
> something like:
> 
> ((8 * 5) + 3)
> 
> and it is that equation that I'm going to need to eval.  So I 
> don't think I'll be able
> to do this in a query.
> 
> Chris

Make sure you check if the tables are valid and present
in the database.  But like others have suggested, you
should *really* look for a better way to do this.

Putting text into a database and then blindly eval()'ing
it later on is just begging for trouble.

---
Scott Hurring
Systems Programmer
EAC Corporation
[EMAIL PROTECTED]
Voice: 201-462-2149
Fax: 201-288-1515

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