Define a configuration form for a block.
$delta: Which block is being configured. This is a unique identifier for the block within the module, defined in hook_block_info().
A configuration form, if one is needed for your block beyond the standard elements that the block module provides (block title, visibility, etc.).
For a detailed usage example, see block_example.module.
Note: this list is generated by pattern matching, so it may include some functions that are not actually implementations of this hook.
function hook_block_configure($delta = '') {
// This example comes from node.module.
$form = array();
if ($delta == 'recent') {
$form['node_recent_block_count'] = array(
'#type' => 'select',
'#title' => t('Number of recent content items to display'),
'#default_value' => variable_get('node_recent_block_count', 10),
'#options' => drupal_map_assoc(array(
2,
3,
4,
5,
6,
7,
8,
9,
10,
11,
12,
13,
14,
15,
16,
17,
18,
19,
20,
25,
30,
)),
);
}
return $form;
}