Loads blocks' information from the database.
An array of blocks grouped by region.
function _block_load_blocks() {
global $theme_key;
$query = db_select('block', 'b');
$result = $query
->fields('b')
->condition('b.theme', $theme_key)
->condition('b.status', 1)
->orderBy('b.region')
->orderBy('b.weight')
->orderBy('b.module')
->addTag('block_load')
->addTag('translatable')
->execute();
$block_info = $result
->fetchAllAssoc('bid');
// Allow modules to modify the block list.
drupal_alter('block_list', $block_info);
$blocks = array();
foreach ($block_info as $block) {
$blocks[$block->region]["{$block->module}_{$block->delta}"] = $block;
}
return $blocks;
}