[RESOLVED] When does $_POST[] get data

[Toadums]

Hi. just a little theory help...

Does $_POST[] fill itself after a submit button is pressed? or is it like...what ever is written inside a textbox at anytime is what the POST will return?...not sure how to word it.

prety much much ..would this work:

$var = $_POST['variable']

without any buttons being pressed? I need to get the current value of a textbox, and would prefer to do it without a submit button..

Can I use javascript?

document.form1.variable.value

?

Also, in javascript would this work:

var x=<?php echo $_POST['variable'];?>;

?

Thanks!
Paul

[NogDog]

Nothing happens in your PHP script until the HTTP request and its accompanying post data (if any) is sent from the browser and reaches the web host where your PHP pages exist, the web server program at that host processes the request, and fires off your PHP script and "hands it" the post data from the HTTP request for the PHP processor to allocate to the $_POST array.

The only JavaScript that would affect a PHP script on the web host would be JavaScript that uses an "AJAX" implementation to send a HTTP request to the web host.

[Toadums]

Good to know, I was playing around with the onchange="" of a textbox, and achieved what I wanted. That is good to know about the POST data tho. because I was trying to make it grab the post data without hitting submit hehe.

Thanks