get value on a form or grid

Is there a way to get the value of a field on a form or GRID through PHP.

I tried $_POST, $_GET, $_REQUEST with single quotes [’#id_sc_field_description_1’] or double quotes {"#id_sc_field_description_1"], based on id with # (#id_sc_field_description_1) or without # (id_sc_field_description_1), based on the name of a field (description_1) but nothing seems to work.

$_REQUEST [’#id_sc_field_description_1’];
$_GET [’#id_sc_field_description_1’];
$_POST [’#id_sc_field_description_1’];

I know on a form i can use {fieldname} but I can’t use this format in the project i want to use. I want to put all field-values in an array to use it later. So i need to loop trough all fields on a form/grid and put them in an array.

Any suggestions?

PHP works side server. You must use Javascript.