form_state['redirect'] issue - drupal 6

A bit old, this thread, but the solution is the following:
$form_state['redirect'] = array('path', 'var1=value1', 'var2=value2', etc...);
The resulting redirection will look like: ?q=path&var1=value1&var2=value2...

So, in your case, it would be form_state['redirect'] = array('page1', 'id=' . $form_state['values']['index_search']);

I just had to do this today and here is the solution i came up with: (d6)

1) hook_form_alter to add in a validation handler that runs before all others and extra submit handler

function mymodule_form_alter(&form, &$form_state, $form_id) {
  if ($form['#id'] == 'user-login' || $form['#id'] == 'user-login-form') {
    array_unshift($form['#validate'], 'mymodule_login_validate');
    $form['#submit'][] = 'mymodule_login_submit';
  }
}

2) validation handler that looks at the users table login field which is 0 if a user has never logged in

function mymodule_login_validate($form, &$form_state) {
  // rather intense, could do a single query here instead
  $user = user_load(array('name' => $form_state['values']['name']));

  if ($user->login == 0) {
    // set a designator so that we can redirect on submit
    $form_state['values']['redirect'] = 'user/'. $user->uid .'/edit';
  }
}

3) submit handler to overwrite the redirect key

function mymodule_login_submit($form, &$form_state) {
  if (isset($form_state['values']['redirect'])) {
    $form_state['redirect'] = array($form_state['values']['redirect']);
  }
}

Watch out if setting $form_state['redirect'] in a form submit handler. If $form['#redirect '] has been set, it will trump whatever you have set in $form_state['redirect'].

For confirmation of this, have a look at the code for drupal_redirect_form(), in includes/form.inc.

I have this in one module:

$form_state['redirect'] = array('node/3',$it);
And in my node 3 it url appears as http://example.com/itc?10032
(itc is alias for node/3). My question is how can i get the value of 10032 in node/3 ?

Here is the code that work`s for me:

<?php
// $Id: My module.module
function My_module_form_alter(&$form, $form_state, $form_id) {
    if($form_id == 'search_form') {
        $form['buttons']['submit']['#submit'][] = 'My_module_node_form_submit';
    }
}

function My_module_node_form_submit($form, &$form_state) {
    unset($form_state['rebuild']);
    $form_state['redirect'] = array('your/custom/path');

}
?>

Hello all i m also facing a form submitting problems. This is the data which iam posting to paypal and works fine but i m not able to validate the amount. Plz any idea how to validate the amount field that it should not be null before posting? and posting should also be done right.

 $forms=array();
   $forms['#action'] = 'https://www.sandbox.paypal.com/cgi-bin/webscr';
    $forms['amount']=array('#type'=>'textfield',
                          '#title'=>t('Enter Credit Amount'),'#description'=>t('Number of credits to purchase for user'),
                          '#required'=>TRUE,'#name'=>'amount',);
    
   
   //for paypal
     $forms['cmd'] = array(
    '#type'  => 'hidden',
    '#value' => '_xclick',
    '#name'  => 'cmd',
  );
   $forms['business'] = array(
    '#type'  => 'hidden',
    '#name'  => 'business',
    '#value' => 'anouma_1312968620_biz@gmail.com',
  );

  $forms['item_name'] = array(
    '#type'  => 'hidden',
    '#value' => 'Credits to Unlock',
    '#name'  => 'item_name',
  );
  $forms['rm'] = array(
    '#type'  => 'hidden',
    '#value' => '2',
    '#name'  => 'rm',
  );

  
   $forms['return'] = array(
    '#type'  => 'hidden',
    '#value' => preg_replace('/credit/','thanks',selfURL()),
    '#name'  => 'return',
  );
   $forms['notify_url'] = array(
    '#type'  => 'hidden',
    '#value' => preg_replace('/credit/','ipn.php',selfURL()),
    '#name'  => 'notify_url',
  );
   $forms['cancel_return'] = array(
    '#type'  => 'hidden',
    '#value' => selfURL(),
    '#name'  => 'cancel_return',
  );
   
   $forms['submit']=array('#type'=>'submit','#value'=>t('Pay Now through PayPal'),
                          '#prefix' => '<div class="paypal">',
                          '#suffix' => '</div>',); 
   return $forms;

I have a also a problem with $form_state['redirect'].

My code looks like this:

function my_module_form_alter(&$form, $form_state, $form_id) {
  switch ($form_id) {
    case 'stormproject_node_form':
      // some custom form fields
      $form['#submit'][] = 'my_module_alter_submit';
      break;
  }
}

function my_module_alter_submit($form, &$form_state) {
  // some code
  $form_state['redirect'] = array('node/'. $team->nid .'/edit');
}

I tried several things, but nothing really works.
The form just doesn't redirect to the path I specified.
Does anyone have an idea who the redirect could work?