[session] is a new WebDNA feature that recognises a browser through its "fingerprint"[session] is a new WebDNA feature (from version 8.1) that recognises a browser through its "fingerprint", and thus to get rid of a cookie in most cases. It is fast and easy to use.
follow the visitor by moving the [session] value from one page to the other with a POST or GET
Identify a visitor who logged-in : associates the tag [session] with the user name
Identify a visitor who comes back after few days. Depending on the settings, the session test allow to recognise him.
Work with search engines
Security is increased by not allowing a cookie to be manipulated, since there is none
Easier to use and much faster than a client-side cookie
Good for visitors who do not want to leave information behind them (cookie disabled)
Allows to easily kill a session
Allows to move a session from a browser to another browser
|[sessionstart]||Starts a session by recording the day, time of the day, IP, Unique browser ID and (optional) the life in seconds, like in [sessionstart life=10]|
|[session]||[session] has a unique value once the session is started. This value can be moved from one page to another using POST or GET|
|[sessionIPmatch]||T(rue) or F(alse): checks if the session IP is the same as the current IP|
|[sessionalive]||T(rue) or F(alse): checks the current time against the session time if it is alive|
|[browserIDmatch]||T(rue) or F(alse): checks the browser "fingerprint" against the session browser ID|
|[sessionend]||kills a [session] by deleting it from reserved.db|
|[sessionip]||shows the IP number stored in session, format [ipaddress] (with the leadings 0, so we can do comparisons)|
|[sessiondate]||shows the date stored in session|
|[sessiontime]||shows the time stored in session|
|[sessionlife]||calculates how many seconds a session is still alive, and show 0 if terminated|
|[sessionutime]||shows the session Unix Time (also known as POSIX time or Epoch time, defined as the number of seconds that have elapsed since 00:00:00 Coordinated Universal Time (UTC), Thursday, 1 January 1970)|
In certain rare cases, it is possible to find two identicals browser "fingerprint" or BrowserID. It is not advised to do visitor recognition based only on Browser ID
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A list of user-submitted tips ...F.A.Q
A compilation of some user's questions...Download WebDNA Applications
WebDNA applications...AWS Raw WebDNA LAMP-Plus WebServer
Amazon Web Services (AWS) README for Machine Image ID...Technical Change History
This Technical Change History provides a reverse chronological list of WebDNA changes...WebDNA Libraries
A list of available libraries for WebDNA...
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will display a random number...[commitdatabase]
[writefile] functions allows you to perform a wide variety of tasks...[appendfile]
Writes text to the end of an existing file...[return]
Explicitly identify what text is returned from a function call...