'fieldset',
'#title' => t('Error Log'),
'#collapsible' => TRUE,
);
foreach (watchdog_severity_levels() as $level => $label) {
$watchdog_levels["level_$level"] = $label;
}
$form['error_log']['error_log_levels'] = array(
'#type' => 'checkboxes',
'#title' => t('Message levels'),
'#description' => t('Check the log levels which should be sent to the PHP error log.'),
'#default_value' => variable_get('error_log_levels', error_log_default_levels()),
'#options' => $watchdog_levels,
);
$form['error_log']['error_log_ignored_types'] = [
'#type' => 'textarea',
'#title' => t('Ignored types'),
'#description' => t('A list of log event types for which messages should not be sent to the PHP error log (one type per line). Commonly-configured types include access denied for 403 errors and page not found for 404 errors.'),
'#default_value' => variable_get('error_log_ignored_types', ''),
];
}