Untitled

Change form data after submit in drupal
function my_module_form_alter(&$form, &$form_state) {
    // ...
    $form['#submit'][] = 'my_module_form_alter_submit';
}

function my_module_form_alter_submit($form_id, $form_values) {
    drupal_set_message(t('Submit Function Executed!'));
}

if(isset($form['#node']) && $form['type']['#value'] == 'page') {
    $form['#submit'][] = 'my_module_form_alter_submit';
}

function my_module_form_alter_submit($form, &$form_state) { ... }