Question

For hidden fields, can i use a field of the type

<input type="hidden" name="field_name" value="<?php print $var; ?>"/>

and retrieve it after the GET / POST method as $_GET['field_name'] / $_POST['field_name'] ?

are there any other ways of using hidden fields in php?

Answer 1

You absolutely can, I use this approach a lot w/ both JavaScript and PHP.

Field definition:

<input type="hidden" name="foo" value="<?php echo $var;?>" />

Access w/ PHP:

$_GET['foo'] or $_POST['foo']

Also: Don’t forget to sanitize your inputs if they are going into a database. Feel free to use my routine: https://github.com/niczak/PHP-Sanitize-Post/blob/master/sanitize.php

Cheers!