Importance Of Form

1. Form is the standard way using which a web application interacts with it’s users.
2. A web application receives input from the user via form input.
3. Handling form input is the cornerstone of a successful web application – everything else builds on it.

How Browser Passes Form Data

The browser interprets the HTML source for a

particular page:

– Result is a combination of text, images, and entry

fields

– Each entry field has a specific name

1. User fills in these fields, (with potentially some

   client-side input checking via JavaScript) and

   then selects a submission button

2. The browser reads the input fields, and creates

   a message that is sent to the server

– A series of name, value pairs

The “Form” tag

FORM attributes

– action

1. URL of the resource that receives the filled-in form.
2. This is the URL of our PHP code that receives the input.

– method

1. Choices are “get” or “post”.

– enctype

1. MIME type used to send results. By default is application/xww-form-urlencoded.

2. Would use multipart/form-data if submitting a file (INPUT,

   type=file)

   <FORM action=“MyHandler.php” method=“post”>

What are “GET” and “POST” ?

1. Whenever the browser  sends  an HTML form data to the server , it has to follow some mechanism of sending the data.
2. Such mechanisms are called HTTP methods and the 2 most popular of them are GET and POST.
3. Thus in short we can say that GET and POST are data sending methods used by browser .