What is the equivalence of:

   <form action="https://paypaad.bankpasargad.com/PaymentController" method="POST">             <input type="hidden" name="content" value='<?php echo $xml ?>' />             <input type="hidden" name="sign" value="<?php echo $sign ?>" />             <input type="submit" value="send" name="submit" />    </form>  

in Drupal 7 ?

I already use following code in my form submit handler, but it doesn’t work:

function Chargingform_nameform_submit($form, &$form_state)     {     $options = array();     $options = array(         'method' => 'POST',                'xml' => $form_state['values']['xml'],         'sign' => $form_state['values']['sign'],         'headers' => array('Content-Type' => 'application/x-www-form-urlencoded'),               );     $url = 'https://paypaad.bankpasargad.com/PaymentController';     $response = drupal_http_request($url, $options); } 

How I can submit XML, sign to URL and redirect user to that URL at the same time?

This is my code:

function Chargingform_nameform() {     $xml = 'PHP Handbook30000130000This is good book.MySQL Handbook25000250000This is a good book too.';     // Get sing     $sign ='ewtnXYRWPSalHhna9hgO+Kc0W9Z8JBUeG1FkcKPvZL5w2s588c0/B9r';      $form['xml'] = array(        '#title' => t('xml'),        '#type' =>'hidden',        '#value'=>$xml,           );     $form['sign'] = array(        '#title' => t('sign'),        '#type' =>'hidden',        '#value'=>$sign,     );        $form['submit'] = array(       '#type' => 'submit',       '#value' => t('submit'),     );     return $form; }   function Chargingform_nameform_submit($form, &$form_state) {     $options = array();      $options = array(     'method' => 'POST',            'xml' => $form_state['values']['xml'],     'sign' => $form_state['values']['sign'],               );       $url = 'https//:url';       $response = drupal_http_request($url, $options);    } 

I don’t know really how to manage it in JavaScript.

Any suggestions?