Isset function

[Biske94]

Okay this is a newbie question but I know how it works but I just want to know how.

So this code for example:

if(isset($_POST['submit'])){

    // do some stuff

} else {

    // do some else stuff

}

This if statement will only do its code block if submit button is clicked or in nerds language if $_POST['submit'] is set.
So thats means that value of that submit button is NULL before clicking, but when we click that submit button we are giving it a value?

For example

<input type="submit" name="submit" value="someAwesomeValue">

if I click this button its value will be 'someAwesomeValue' which means I set $_POST['submit'] value to 'someAwesomeValue'

or in other words $_POST['submit'] = 'someAwesomeValue'

Thanks!

[administrator]

Hi,

It has been a while, but why use isset on the post variable?

Stef