cant print values passed by form

hi,

i installed the form module and worked out this code. Its is supposed to take in username and email and print them out. i created this code

-----------

$form['user']["name"] = array(
 '#type' => 'textfield',
 '#title' => t('user_name'),
 '#default_value' => 'crashpoint',
 '#size' => 30,
 '#maxlength' => 30,
 '#description' => 'enter the username',
 '#attributes' => NULL,
 '#required' => TRUE,
 );
$form['user']["email"] = array (
 '#type' => 'textfield',
 '#title' => t('email'),
 '#default_value' => 'crashpoint@gmail.com',
 '#size' => 20,
 '#maxlength' => 20,
 '#description' => 'enter the email',
 '#attributes' => NULL,
 '#required' => TRUE,
 );
  
$form['submit_button'] = array(
      '#type' => 'submit',
    '#value' => t('Submit'),
    );

$output = drupal_get_form('create_form', $form);
print $output;

----------

This prints the form. But how do I go about printing the values that this form passes in the post array. I saw that the $_POST['edit'] array was used

So to the above snippet I added the lines
------------------

print "<br/><br/>";
$op = $_POST['edit'];
print "email is ".$op["email"]."<br/>";

------------

but it does not show any output. Can anyone please point out where am i going wrong?