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wizonesolutions on 01/01/12

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Last Edited at 01/01/12 03:44pm

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Drupal Batch API for hook_update_N()

/ Published in: PHP

This is the Batch API example shown on http://api.drupal.org/api/drupal/developer--hooks--install.php/function/hook_update_N/6.

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<?php
  // However, for more complex operations that may take a long time,
  // you may hook into Batch API as in the following example.
  $ret = array();

// Update 3 users at a time to have an exclamation point after their names.
  // (They're really happy that we can do batch API in this hook!)
  if (!isset($sandbox['progress'])) {
    $sandbox['progress'] = 0;
    $sandbox['current_uid'] = 0;
    // We'll -1 to disregard the uid 0...
    $sandbox['max'] = db_result(db_query('SELECT COUNT(DISTINCT uid) FROM {users}')) - 1;
  }

$users = db_query_range("SELECT uid, name FROM {users} WHERE uid > %d ORDER BY uid ASC", $sandbox['current_uid'], 0, 3);
  while ($user = db_fetch_object($users)) {
    $user->name .= '!';
    $ret[] = update_sql("UPDATE {users} SET name = '$user->name' WHERE uid = $user->uid");

$sandbox['progress']++;
    $sandbox['current_uid'] = $user->uid;
  }

$ret['#finished'] = empty($sandbox['max']) ? 1 : ($sandbox['progress'] / $sandbox['max']);

return $ret;
?>

URL: http://api.drupal.org/api/drupal/developer--hooks--install.php/function/hook_update_N/6

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