It's pretty stright forward, im trying to display the results of my form, Im having trouble finding something that explains how to display the results outside of the drupal_set_message() code, I think I am close with my current code.However I am getting this error Fatal error: Cannot use string offset as an array

 * Block info 

function zillow_block_info(){
    $blocks['zillow_block'] = array(
        'info' => t('Zillow Block'),
    return $blocks;

function zillow_block_view($delta = ''){
    $block = array();
        switch ($delta){
    case 'zillow_block';
        $block['subject'] = t('Zillow Block');
        $block['content'] = drupal_get_form('zillow_form');
    return $block;

 * Api info 

function zillow_api_info($form, &$zinfo){
    $state = $zinfo['values']['state'];
    $zillow_id = 'XXXXXXXXXXX';
    $xml = file_get_contents('http://www.zillow.com/webservice/GetRateSummary.htm?zws-id='.$zillow_id.'&state='.$state.'');
    $zinfo = simplexml_load_string($xml);

    foreach($zinfo->response as $rates){
        $zinfo .= $rates->today->rate[0];
        $zinfo .= $rates->today->rate[1];
        $zinfo .= $rates->today->rate[2];
        $zinfo .= $rates->lastWeek->rate[0];
        $zinfo .= $rates->lastWeek->rate[1];
        $zinfo .= $rates->lastWeek->rate[2];

    return $zinfo;

 * Form

function zillow_form($form, &$zinfo){

    $form['description'] = array(
        '#type' => 'item',
        '#title' => t('Get your mortgage rates'),
    $form['rates'] = array(
        '#type' => 'fieldset',
        '#title' => t('Mortgage Rates'),
        '#collapsiable' => TRUE,
        '#collapsed' => FALSE,

    $form['rates']['state'] = array(
        '#type' => ('select'),
        '#title' => t('Choose One'),
        '#options' => array( 
            'AK' => t('Alaska'),  
            'AZ' => t('Arizona'),
        '#required' => TRUE
    $form['submit'] = array(
        '#type' => 'submit',
        '#value' => t('Submit'),
        $form['page_output'] = array(
        'markup' => 'Submitted value:'. $zinfo['values']['state']); 
    return $form;

 * Submission Output    

function zillow_form_submit($form, &$zinfo){
  drupal_set_message(t('this is the info the form has submitted. states=@states, todaysrates=@todaysrates', array('@states' => $zinfo['values']['state'], '@todaysrates' => zillow_api_info($form, $zinfo))));
  $zinfo['processed']['states'] =  serialize($zinfo['values']['state']);
  $zinfo['processed']['todaysrates'] =  serialize(zillow_api_info($form, $zinfo));

Edit** My code has been modified I am now only getting this error

  • Your code is a mess, if you spent some time cleaning it up it would be easier to see what's going on and you might fix the problem yourself. – googletorp Mar 20 '12 at 21:07
  • I didnt realize it was really a mess, I have comments above the functions that are being used... Anyhow its a little cleaner, but it is necessary to use my whole code – Jeremy Love Mar 20 '12 at 23:06
  • You should use Drupal naming conventions, it seems like $zinfo should be $form_state, you api function takes $form but doesn't use it. The error you get is due to an form array containing values that aren't allowed, but nothing looks wrong. (All non #attributes should be arrays). – googletorp Mar 21 '12 at 9:12
  • If that's the case and there's nothing wrong with my code then it should work correctly, however it doesn't... Even if i do take the api function off it still does not output the results... – Jeremy Love Mar 21 '12 at 18:39

The problem is here:

    $form['page_output'] = array(
    'markup' => 'Submitted value:'. $zinfo['values']['state']); 

Any element of a render-array that doesn't start with a # symbol is itself considered a child render-array by the drupal_render() function.

As drupal_render() expects an array when your array key is markup (without the #), it tries to treat the variable as an array. Since it's a string, PHP complains that it can't use the provided variable as an array...because it isn't one :)

This should work:

    $form['page_output'] = array(
    '#markup' => 'Submitted value:'. $zinfo['values']['state']); 

Have a look at Render Arrays in Drupal 7 and the FAPI #markup property for more information.


There's a slightly bigger problem: in zillow_api_info() you're accepting the $zinfo parameter by reference, and then overwriting it with this call: $zinfo = simplexml_load_string($xml);.

That code overwrites the $zinfo variable in memory, so when you use it again in your submission function it will cause errors. It's also what's causing the last two lines not to work, and $zinfo['values'] to not exist when your form is rebuilt.

The easiest solution is to change zillow_api_info() to look like this:

function zillow_api_info($form, &$form_state){
  $state = $form_state['values']['state'];
  $zillow_id = 'XXXXX';
  $xml = file_get_contents('http://www.zillow.com/webservice/GetRateSummary.htm?zws-id='.$zillow_id.'&state='.$state.'');
  $zinfo2 = simplexml_load_string($xml);

  foreach($zinfo2->response as $rates){
    $zinfo2 .= $rates->today->rate[0];
    $zinfo2 .= $rates->today->rate[1];
    $zinfo2 .= $rates->today->rate[2];
    $zinfo2 .= $rates->lastWeek->rate[0];
    $zinfo2 .= $rates->lastWeek->rate[1];
    $zinfo2 .= $rates->lastWeek->rate[2];

  return $zinfo2;

As an extra note, you do need $zinfo['rebuild'] = TRUE in your submit function too.

I'd really advise using the $form_state variable name throughout your code when it refers to the form state array, it'll make problems like this vanish instantly :)

| improve this answer | |
  • Thank you for replying, I tried what you said and although that may be a problem is did not fix the error I am continuously getting. The error is on the last to lines of the code at the bottom. And even if I take those out, It still does not output the value that was select, for example if I select a state lets say california for example and I click submit, it should output california. It does that fine in drupal_set_message but doesnt do it on the actual page. – Jeremy Love Mar 21 '12 at 19:26
  • Try adding $form_state['rebuild'] = TRUE; into the zillow_form_submit() function...that will probably help. If it doesn't work let me know and I'll make a quick module with your code in it to find the problem – Clive Mar 21 '12 at 19:34
  • Yeah i had that in before I posted a edit of my code, it still gave off the same error, your welcome to try to make the module, I really appreciate it. – Jeremy Love Mar 21 '12 at 19:39
  • No probs I'll have a go now there's nothing good on the telly anyway :) Are you able to share a valid $zillow_id so I can get the proper data from your webservice? Don't worry if not, I'll just fudge some data – Clive Mar 21 '12 at 19:41
  • @JeremyLove I've got it working in the test module, I've edited the answer and it should help :) – Clive Mar 21 '12 at 20:12

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