function watchdog in Drupal 7

Same name and namespace in other branches

1. 4 includes/bootstrap.inc \watchdog()
2. 5 includes/bootstrap.inc \watchdog()
3. 6 includes/bootstrap.inc \watchdog()

Logs a system message.

Parameters

$type: The category to which this message belongs. Can be any string, but the general practice is to use the name of the module calling watchdog().

$message: The message to store in the log. Keep $message translatable by not concatenating dynamic values into it! Variables in the message should be added by using placeholder strings alongside the variables argument to declare the value of the placeholders. See t() for documentation on how $message and $variables interact.

$variables: Array of variables to replace in the message on display or NULL if message is already translated or not possible to translate.

$severity: The severity of the message; one of the following values as defined in RFC 3164:

• WATCHDOG_EMERGENCY: Emergency, system is unusable.
• WATCHDOG_ALERT: Alert, action must be taken immediately.
• WATCHDOG_CRITICAL: Critical conditions.
• WATCHDOG_ERROR: Error conditions.
• WATCHDOG_WARNING: Warning conditions.
• WATCHDOG_NOTICE: (default) Normal but significant conditions.
• WATCHDOG_INFO: Informational messages.
• WATCHDOG_DEBUG: Debug-level messages.

$link: A link to associate with the message.

See also

watchdog_severity_levels()

hook_watchdog()

127 calls to watchdog()

actions_do in includes/actions.inc

Performs a given list of actions by executing their callback functions.

actions_save in includes/actions.inc

Saves an action and its user-supplied parameter values to the database.

actions_synchronize in includes/actions.inc

Synchronizes actions that are provided by modules in hook_action_info().

aggregator_aggregator_fetch in modules/aggregator/aggregator.fetcher.inc

Implements hook_aggregator_fetch().

aggregator_form_category_submit in modules/aggregator/aggregator.admin.inc

Form submission handler for aggregator_form_category().

... See full list

9 string references to 'watchdog'

actions_loop_test_watchdog in modules/simpletest/tests/actions_loop_test.module

Implements hook_watchdog().

bootstrap_hooks in includes/bootstrap.inc

Defines the critical hooks that force modules to always be loaded.

dblog_top in modules/dblog/dblog.admin.inc

Page callback: Shows the most frequent log messages of a given event type.

dblog_update_7001 in modules/dblog/dblog.install

Update the {watchdog} table.

dblog_update_7002 in modules/dblog/dblog.install

Add an index to the severity column in the watchdog database table.

... See full list

File

includes/bootstrap.inc, line 1996

Functions that need to be loaded on every Drupal request.

Code

function watchdog($type, $message, $variables = array(), $severity = WATCHDOG_NOTICE, $link = NULL) {
  global $user, $base_root;
  static $in_error_state = FALSE;

  // It is possible that the error handling will itself trigger an error. In that case, we could
  // end up in an infinite loop. To avoid that, we implement a simple static semaphore.
  if (!$in_error_state && function_exists('module_invoke_all')) {
    $in_error_state = TRUE;

    // The user object may not exist in all conditions, so 0 is substituted if needed.
    $user_uid = isset($user->uid) ? $user->uid : 0;

    // Prepare the fields to be logged
    $log_entry = array(
      'type' => $type,
      'message' => $message,
      'variables' => $variables,
      'severity' => $severity,
      'link' => $link,
      'user' => $user,
      'uid' => $user_uid,
      'request_uri' => $base_root . request_uri(),
      'referer' => isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : '',
      'ip' => ip_address(),
      // Request time isn't accurate for long processes, use time() instead.
      'timestamp' => time(),
    );

    // Call the logging hooks to log/process the message
    module_invoke_all('watchdog', $log_entry);

    // It is critical that the semaphore is only cleared here, in the parent
    // watchdog() call (not outside the loop), to prevent recursive execution.
    $in_error_state = FALSE;
  }
}