Drupal进度条

Drupal有一个内置的百分比进度条显示操作进度的工具batch.

使用方式如下：

batch_set(batch_example_batch_1());

batch_process('redirect_page.php');

function batch_example_batch_1() {

    for ($i = 0; $i<100; $i++) {
        $operations[] = array('batch_example_op_1', array($nid));
    }
    $batch = array(
            'operations' => $operations,
            'finished' => 'batch_example_finished',
    );
    return $batch;
}

function batch_example_op_1($nid, &$context) {

    do_something();

    // Store some result for post-processing in the finished callback.
    $context['results'][] = "do something";

    // Optional message displayed under the progressbar.
    $context['message'] = t('Loading @title', array('@title' => $node->title));

}

function batch_example_finished($success, $results, $operations) {
    if ($success) {
        $message = count($results) . ' processed.';
    }
    else {
        $error_operation = reset($operations);
        $message = 'An error occurred while processing ' . $error_operation[0] . ' with arguments :' . print_r($error_operation[0], TRUE);
    }
    drupal_set_message($message);

}