$_SESSION['name'] = "RAGHAV";
<?php // start session session_start(); // Assign value to session $user = $_SESSION['variable_name']; // variable_name = value to store in session // To reset session variable use below method unset($user); // If you want to destroy all session variables use below method session_destroy(); // destroys all session variables ?>
Session Variables
The session variables can be accessed in a jsp page from the request object. Note: Accessing session contents in JSP is not a good design practice
A register variables is that which got space in CPU internal register sets this requst can be granted or rejected by CPU ,by register veriable the processing speed become much faster for that variable.
The block they are declared in.
in register
Either in registers or on the stack.
Asks the compiler to devote a processor register to this variable in order to speed the program's execution. The compiler may not comply and the variable looses it contents and identity when the function it which it is defined terminates.
Registry variables can be identified with registry allocation. The programmer will decide on the variables that need to be assigned to the registry, and variables not assigned to the registry will be held in RAM.
Faster execution of code.
In ASP.NET 3.5, session variables can be utilized to store user-specific data across multiple pages within a web application. You can access the Session object through Session["VariableName"] to set or retrieve values. For example, to store a username, you would use Session["Username"] = "JohnDoe";, and to retrieve it, you would use string username = (string)Session["Username"];. Ensure to manage session state properly to avoid excessive memory usage and to handle session expiration appropriately.
* These are all implementation defined. Access to `register' specified indentifiers should be as fast as possible, so the compiler may place the value in a machine register. However, the compiler is free to treat a `register' declaration as an `auto' declaration. * Where free memory is maintained is an OS specific concept. Instructions are generally stored in code segement. Local Variables are stored in Stack. Register variables are stored in Register. Global & static variables are stored in data segment. The memory created dynamically are stored in Heap And the C program instructions get stored in code segment.