Working with post values in the admin panel

I solved it this way

<form name="input" action="<?php echo get_bloginfo( 'template_directory' )."https://wordpress.stackexchange.com/".'post_options_from_form.php'; ?>" method="post">

although i wanted post_options_from_form.php to be an admin page.

Edit:

This finally worked as i was able to post to the admin page i created

<form name="input" action="admin.php?page=admin_page" method="post">

On the function,

function admin_page()
{
require('post_options_from_form.php');
}