Cant find the Error in this Php piece of code

Question

Im getting T_String error on this code, its saying more accuratly on the 2nd line ($form['com...) and i simply cant see why.

function _maxlength_comment_type_form_alter(&$form, $form_state, $form_id) {
    $form['comment']['comment_max_length'] = array(
     '#type' => 'select',
     '#title' => t('Maximum comment length'),
     '#default_value' => variable_get('comment_max_length_'. $form['#node_type'] -> type, 160),
     '#options'=> drupal_map_assoc(array(140,160,180,200)),
     '#description' => t('numero maximo de caracteres permitidos.'),
     '#weight' => -1,
     );

Im adding this code to Maxlength drupal module.

Answer 1

It might be this part:

'comment_max_length_'. $form['#node_type'] -> type

Try getting rid of the spaces around the arrow?

---

Edit - I don't believe the above is actually a problem with the code, though I'd still recommend removing the spaces as a matter of style, just so it's plainly obvious that you're doing this:

'comment_max_length_'. ($form['#node_type']->type)

rather than this:

('comment_max_length_' . $form['#node_type'])

Your code is valid and Works On My PC^TM.

---

Another edit:

Make sure that $form['comment'] has been defined as well. Perhaps add this at the start of the function.

if (!isset($form['comment'])) $form['comment'] = array();

Answer 2

Two problems I can see, the one nickf alluded to above, i.e. you shouldn't have a space either side of the arrow:

'comment_max_length_'. $form['#node_type'] -> type

Additionally, this shouldn't have a comma after it (as it's the last item in the array):

'#weight' => -1,`

Answer 3

How about breaking that huge statement into smaller ones so you can pinpoint the problem better?