For what purpose applications variables are used?

Asked By: Bjorg Oeser | Last Updated: 23rd February, 2020
Category: technology and computing web development
4.8/5 (46 Views . 9 Votes)
Application variables are the variables which remain common for the whole application for all the users… Their value can be used across the whole application by any user… And they die only when the application stops or probably when they are killed forcibly…

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Beside this, for what purpose session variables are used?

Session variables are special variables that exist only while the user's session with your application is active. Session variables are specific to each visitor to your site. They are used to store user-specific information that needs to be accessed by multiple pages in a web application.

Likewise, what are the different objects used in ASP? We will discuss a few of the ASP objects: application, request, response, server.

Request: allows access to both header and body of the HTTP request.

  • Query String: used in the past with method GET to pass parameters.
  • Form: used today with method POST to provide access to the pair - fieldname = value.

Moreover, what is an application object?

Application Object. An application on the Web may be a group of ASP files. The Application object is used to store and access variables from any page, just like the Session object. The difference is that ALL users share one Application object, while with Sessions there is one Session object for EACH user.

What is classic ASP application?

Classic ASP is a server-side scripting environment that you can use to create and run dynamic web applications. With ASP, you can combine HTML pages, script commands, and COM components to create interactive web pages that are easy to develop and modify.

33 Related Question Answers Found

How do I start a session?

To begin a new session, simply call the PHP session_start() function. It will create a new session and generate a unique session ID for the user. The PHP code in the example below simply starts a new session.

What are Session objects?

The Session object stores information needed for a particular user's session on the web server. It is automatically created every time when an ASP page from the web site or web application is requested by a user who does not already have a session, and it remains available until the session expires.

How do you destroy a session?

Destroying a PHP Session
A PHP session can be destroyed by session_destroy() function. This function does not need any argument and a single call can destroy all the session variables. If you want to destroy a single session variable then you can use unset() function to unset a session variable.

Where session is stored?

The session can be stored on the server, or on the client. If it's on the client, it will be stored by the browser, most likely in cookies and if it is stored on the server, the session ids are created and managed by the server.

How do you check whether a variable is set with the session?

Checking session data. You can check whether a variable has been set in a user's session using the function isset(), as you would a normal variable. Because the $_SESSION superglobal is only initialised once session_start() has been called, you need to call session_start() before using isset() on a session variable.

Are session variables secure?

Since SESSION variables are stored in the server and not at the client side, SESSIONS are much safer. But that the case if the attacker doesn't have access to your server. As Gerben says, sessions can be compromised, so you need to take measures against that.

What is session value?

A session is a global variable stored on the server. Each session is assigned a unique id which is used to retrieve stored values. Whenever a session is created, a cookie containing the unique session id is stored on the user's computer and returned with every request to the server.

Can we set session value in JavaScript?

You can't access Session directly in JavaScript. Javascript can not directly set session values.

What is the difference between session object and application object?

The Application object is used to store and access variables from any page, just like the Session object. The difference is that ALL users share ONE Application object (with Sessions there is ONE Session object for EACH user).

What is asp net objects?

ASP.NET. The Request, Response, Server, Application, and Session objects are part of ASP.NET and are used in much the same way as they are in ASP. However, in ASP.NET these objects are defined in new classes in the System.Web namespace. For more information, see ASP.NET Intrinsic Objects.

What is application in JSP?

In JSP, application is an implicit object of type ServletContext. The instance of ServletContext is created only once by the web container when application or project is deployed on the server. This object can be used to get initialization parameter from configuaration file (web. xml).

What is application in asp net?

The ASP.NET application is the collection of all web pages, code and other files within a single virtual directory on a web server. When information is stored in application state, it is available to all the users.

What is ASP in Java?

ASP (Active Server Pages) is basically the Microsoft's first server-side script engine for dynamically generated web pages. Architecture. In the case of JSP, it is basically a type of Java servlet component which is useful from the user interphase perspective for Java-based applications.

What is an application object in e commerce?

Application Object: provides global variables, constants, objects. – Session Object: provides variables, constants, and objects specific to each user's session.

What is an object in OOP?

In object-oriented programming (OOP), objects are the things you think about first in designing a program and they are also the units of code that are eventually derived from the process. Each object is an instance of a particular class or subclass with the class's own methods or procedures and data variables.

What is ASP in Web technology?

ASP stands for Active Server Page. It is a technology that enables you to make dynamic and interactive web pages. ASP uses server-side scripting to dynamically produce webpages that are not affected by the type of browser the visitor is using.

What are server objects?

Object server (Defined)
An object server is the component of a Content Manager OnDemand system that holds the reports that are accessed by your users. An instance is a logical server environment consisting of a library server, one or more object servers, a database, and cache storage.