I have 5 clients that need their sites monitored for visitors. They are all hosted by different web hosts. Two of them have "asp technology", " one has "php technology" and the others have html pages. I would like to support them by collecting as much data as possible including a unique identifier and dumping it in a database where I'm hosted. I would like the code to be universal and would like to have a version for SQL and MYSQL. I also don't want the use of images, just a little code like google analytics.