Fatal error: Cannot use string offset as an array in includes/form.inc on line 986 [#801970]

I already spend whole day on figuring out the reason of following error:

( ! ) Fatal error: Cannot use string offset as an array in includes/form.inc on line 986

In my case it happen when I post the form.
Is there any easy way to determine what's wrong?

I'm working on someone's code and for me it's a bug. Drupal should help me understand what is going on and how I can fix that.

Comments

Comment #1

kenorb commented 18 May 2010 at 10:34

Backtrace:
...
10. drupal_get_form( $form_id = 'foo_form', class stdClass { public $nid = '42'; ... } )
...
13. form_builder( $form_id = 'foo_form', $form = array ('env_id' => '1',...))
14. form_builder( $form_id = 'foo_form', $form = '\000', $form_state = array (...)
15. _form_builder_handle_input_element( $form_id = 'foo_form', $form = '\000', $form_state = array (...))

$form =  '\0' (length=1)
$form_id = 'foo_form'

$form_state =
&
array
  'storage' => null
  'submitted' => boolean false
  'env_id' => 
    array
      '#type' => string 'hidden' (length=6)
      '#value' => string '1' (length=1)
      '#weight' => int -5
  'vids' => 
    array
      '#tree' => boolean true
      'vid-114' => 
        array
          '#type' => string 'select' (length=6)
          '#title' => string 'foo title' (length=46)
          '#options' => 
            array
              33692 => string 'foo1' (length=19)
              33691 => string 'foo2' (length=21)
              33690 => string 'foo3' (length=18)
              33689 => string 'foo4' (length=23)
              33693 => string 'foo5' (length=5)
          '#value' => null
          '#multiple' => boolean false
          '#size' => int 4
          '#weight' => string '1' (length=1)
      'vid-113' => 
        array
          '#type' => string 'select' (length=6)
          '#title' => string 'foo title' (length=47)
          '#options' => 
            array
              33657 => string 'foo1' (length=42)
              33660 => string 'foo2' (length=36)
              33655 => string 'foo3' (length=39)
              33658 => string 'foo4' (length=40)
              33656 => string 'foo5' (length=20)
              33659 => string 'foo6' (length=20)
          '#value' => null
          '#multiple' => boolean false
          '#size' => int 4
          '#weight' => string '2' (length=1)
      'vid-115' => 
        array
          '#type' => string 'select' (length=6)
          '#title' => string 'some title' (length=50)
          '#options' => 
            array
              33699 => string 'Birth-11 months' (length=15)
              33698 => string '8-20 months' (length=11)
              33697 => string '16-26 months' (length=12)
              33696 => string '22-36 months' (length=12)
              33695 => string '30-50 months' (length=12)
              33694 => string '40-60+ months' (length=13)
          '#value' => null
          '#multiple' => boolean false
          '#size' => int 4
          '#weight' => string '-9' (length=2)
  'submit' => 
    array
      '#prefix' => string '<div class ="submit">' (length=21)
      '#type' => string 'submit' (length=6)
      '#value' => string 'Go' (length=2)
      '#suffix' => string '</div>' (length=6)
      '#weight' => int 10
  'values' => 
    array
      empty

$complete_form =
array
  'storage' => null
  'submitted' => boolean false
  'post' => 
    array
      'env_id' => string '1' (length=1)
      'vids' => 
        array
          'vid-115' => string '33697' (length=5)
      'form_build_id' => string 'form-78907340c22c913194996b6c9ca931f4' (length=37)
      'form_token' => string '46195776d5c7629b8534882c628d38a5' (length=32)
      'form_id' => string 'foo_form' (length=14)
      'op' => string 'Go' (length=2)
  'env_id' => 
    array
      '#type' => string 'hidden' (length=6)
      '#value' => string '1' (length=1)
      '#weight' => int -5
  'vids' => 
    array
      '#tree' => boolean true
      'vid-114' => 
        array
          '#type' => string 'select' (length=6)
          '#title' => string 'foo title' (length=46)
          '#options' => 
            array
              33692 => string 'foo1' (length=19)
              33691 => string 'foo2' (length=21)
              33690 => string 'foo3' (length=18)
              33689 => string 'foo4' (length=23)
              33693 => string 'foo5' (length=5)
          '#value' => null
          '#multiple' => boolean false
          '#size' => int 4
          '#weight' => string '1' (length=1)
      'vid-113' => 
        array
          '#type' => string 'select' (length=6)
          '#title' => string 'foo title' (length=47)
          '#options' => 
            array
              33657 => string 'foo1' (length=42)
              33660 => string 'foo2' (length=36)
              33655 => string 'foo3' (length=39)
              33658 => string 'foo4' (length=40)
              33656 => string 'foo5' (length=20)
              33659 => string 'foo6' (length=20)
          '#value' => null
          '#multiple' => boolean false
          '#size' => int 4
          '#weight' => string '2' (length=1)
      'vid-115' => 
        array
          '#type' => string 'select' (length=6)
          '#title' => string 'foo' (length=50)
          '#options' => 
            array
              33699 => string 'Birth-11 months' (length=15)
              33698 => string '8-20 months' (length=11)
              33697 => string '16-26 months' (length=12)
              33696 => string '22-36 months' (length=12)
              33695 => string '30-50 months' (length=12)
              33694 => string '40-60+ months' (length=13)
          '#value' => null
          '#multiple' => boolean false
          '#size' => int 4
          '#weight' => string '-9' (length=2)
  'submit' => 
    array
      '#prefix' => string '<div class ="submit">' (length=21)
      '#type' => string 'submit' (length=6)
      '#value' => string 'Go' (length=2)
      '#suffix' => string '</div>' (length=6)
      '#weight' => int 10
  '#parameters' => 
    array
      0 => string 'foo_form' (length=14)
      1 => 
        array
          'storage' => null
          'submitted' => boolean false
          'post' => 
            array
              'env_id' => string '1' (length=1)
              'vids' => 
                array
                  'vid-115' => string '33697' (length=5)
              'form_build_id' => string 'form-78907340c22c913194996b6c9ca931f4' (length=37)
              'form_token' => string '46195776d5c7629b8534882c628d38a5' (length=32)
              'form_id' => string 'foo_form' (length=14)
              'op' => string 'Go' (length=2)
      2 => 
        object(stdClass)[4]
          public 'nid' => string '42' (length=2)
          public 'type' => string 'dynamic_content' (length=15)
          public 'language' => string '' (length=0)
          public 'uid' => string '1' (length=1)
          public 'status' => string '1' (length=1)
          public 'created' => string '1273743351' (length=10)
          public 'changed' => string '1273750737' (length=10)
          public 'comment' => string '0' (length=1)
          public 'promote' => string '1' (length=1)
          public 'moderate' => string '0' (length=1)
          public 'sticky' => string '0' (length=1)
          public 'tnid' => string '0' (length=1)
          public 'translate' => string '0' (length=1)
          public 'vid' => string '42' (length=2)
          public 'revision_uid' => string '1' (length=1)
          public 'title' => string 'Test' (length=4)
          public 'body' => string '' (length=0)
          public 'teaser' => string '' (length=0)
          public 'log' => string '' (length=0)
          public 'revision_timestamp' => string '1273750737' (length=10)
          public 'format' => string '2' (length=1)
          public 'name' => string 'admin' (length=5)
          public 'picture' => string '' (length=0)
          public 'data' => string 'a:0:{}' (length=6)
          public 'env_id' => string '1' (length=1)
          public 'parent' => string '0' (length=1)
          public 'weight' => string '0' (length=1)
          public 'has_children' => string '0' (length=1)
          public 'excerpt' => boolean false
          public 'teaser_format' => string '2' (length=1)
          public 'taxonomy' => 
            array
              empty
          public 'files' => 
            array
              empty
          public 'nodewords' => 
            array
              'abstract' => 
                array
                  'value' => string '' (length=0)
              'canonical' => 
                array
                  'value' => string '' (length=0)
              'copyright' => 
                array
                  'value' => string '' (length=0)
              'dc.contributor' => 
                array
                  'value' => string '' (length=0)
              'dc.creator' => 
                array
                  'value' => string '' (length=0)
              'dc.date' => 
                array
                  'value' => 
                    array
                      'month' => string '5' (length=1)
                      'day' => string '13' (length=2)
                      'year' => string '2010' (length=4)
              'dc.title' => 
                array
                  'value' => string '' (length=0)
              'description' => 
                array
                  'value' => string '' (length=0)
              'keywords' => 
                array
                  'value' => string '' (length=0)
              'location' => 
                array
                  'latitude' => string '' (length=0)
                  'longitude' => string '' (length=0)
              'pics-label' => 
                array
                  'value' => string '' (length=0)
              'revisit-after' => 
                array
                  'value' => string '1' (length=1)
              'robots' => 
                array
                  'value' => 
                    array
                      'noarchive' => int 0
                      'nofollow' => int 0
                      'noindex' => int 0
                      'noodp' => int 0
                      'nosnippet' => int 0
                      'noydir' => int 0
                  'use_default' => int 0
          public 'build_mode' => int 0
          public 'readmore' => boolean false
          public 'content' => 
            array
              'body' => 
                array
                  '#value' => string '' (length=0)
                  '#weight' => int 0
              '#body' => 
                array
                  '#value' => string '' (length=0)
                  '#weight' => int 1
  '#build_id' => string 'form-b2af98d1ffe0f73f8e231118ad49d837' (length=37)
  '#type' => string 'form' (length=4)
  '#programmed' => boolean false
  'form_build_id' => 
    array
      '#type' => string 'hidden' (length=6)
      '#value' => string 'form-b2af98d1ffe0f73f8e231118ad49d837' (length=37)
      '#id' => string 'form-b2af98d1ffe0f73f8e231118ad49d837' (length=37)
      '#name' => string 'form_build_id' (length=13)
  '#token' => string 'foo_form' (length=14)
  'form_token' => 
    array
      '#id' => string 'edit-foo-form-form-token' (length=30)
      '#type' => string 'token' (length=5)
      '#default_value' => string '46195776d5c7629b8534882c628d38a5' (length=32)
  'form_id' => 
    array
      '#type' => string 'hidden' (length=6)
      '#value' => string 'foo_form' (length=14)
      '#id' => string 'edit-foo-form' (length=19)
  '#id' => string 'foo-form' (length=14)
  '#description' => null
  '#attributes' => 
    array
      empty
  '#required' => boolean false
  '#tree' => boolean false
  '#parents' => 
    array
      empty
  '#method' => string 'post' (length=4)
  '#action' => string '/node/42' (length=8)
  '#submit' => 
    array
      0 => string 'foo_form_submit' (length=21)
      1 => string 'cookie_cache_bypass_submit' (length=26)
  '#after_build' => 
    array
      0 => string 'checkall_form_after_build' (length=25)
      1 => string 'wysiwyg_process_form' (length=20)
  '#post' => 
    array
      'env_id' => string '1' (length=1)
      'vids' => 
        array
          'vid-115' => string '33697' (length=5)
      'form_build_id' => string 'form-78907340c22c913194996b6c9ca931f4' (length=37)
      'form_token' => string '46195776d5c7629b8534882c628d38a5' (length=32)
      'form_id' => string 'foo_form' (length=14)
      'op' => string 'Go' (length=2)
  '#processed' => boolean false

Code:

function foo_view(&$node, $teaser = FALSE, $page = FALSE) {
...
    $output = drupal_get_form('foo_form', $node);
    $node->content['step1'] = array(
      '#value' => $output,
      '#weight' => 3,
    );
    return $node;
}

function foo_form(&$form_state, $node) {
  $form_state['env_id'] = array(
    '#type' => 'hidden',
    '#value' => $node->env_id,
    '#weight' => -5,
  );

  $form_state['vids'] = array('#tree' => TRUE);

  foreach ($config as $vocab) {
    $vname = taxonomy_vocabulary_load($vocab['vid'])->name;

    $multiselect = $vocab['multiselect'] ? TRUE : FALSE;
    $multiselect = FALSE;
    $form_state['vids']['vid-' . $vocab['vid']] = array(
      '#type' => 'select',
      '#title' => 'Select value for ' . $vname,
      '#options' => dw_get_config_terms($vocab),
      '#multiple' => $multiselect,
      '#size' => 4,
      '#weight' => $vocab['weight']
    );
  }
  $form_state['submit'] = array (
    '#prefix' => '<div class ="submit">',
    '#type' => 'submit',
    '#value' => 'Go',
    '#suffix' => '</div>',
    '#weight' => 10,
  );

  return $form_state;
}

function foo_form_submit($form, &$form_state) {
  $redirect_url = NULL;
  $form_post = $form_state['clicked_button']['#post'];

  foreach($form_post['vids'] as $vocab) {
...
  }

  $path = 'somewhere';
  drupal_goto(NULL, $path);
}

Comment #2

kenorb commented 18 May 2010 at 10:33

Those issue are related to the same Drupal error.
Is there any common solution or some method of tracking these issues to prevent creating new issues related to that problem?
Any explanation why this happen so often?

Comment #3

ljrweb commented 6 August 2010 at 08:42

any progress on this???

this is happening to me using hook_form_alter() in one of my custom modules..

thanks

Comment #4

heine commented 6 August 2010 at 08:49

Title:

( ! ) Fatal error: Cannot use string offset as an array in includes/form.inc on line 986

» Fatal error: Cannot use string offset as an array in includes/form.inc on line 986

@kenorb, the error indicates an incorrectly build form. In your case; You return $form_state from the formbuilder instead of a properly build form array. You also modify $form_state in the formbuilder.

@ljrweb, see the FAPI documentation, or post a support request in the forum.

Comment #5

damien tournoud commented 6 August 2010 at 08:52

Category:

bug

» support

Comment #6

ljrweb commented 6 August 2010 at 16:02

checking the apache logs:

child pid 1030 exit signal Segmentation fault (11)

that seems to be whats causing the issue for me.. apache crashing on the script i believe..

not sure how to fix it.

Comment #7

Anonymous (not verified) commented 8 October 2012 at 20:09

Status:

Active

» Postponed (maintainer needs more info)

Is support still needed for this issue? If not, I recommend closing.

Fatal error: Cannot use string offset as an array in includes/form.inc on line 986

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