function debug

7.x debug($data, $label = NULL, $print_r = FALSE)

Outputs debug information.

The debug information is passed on to trigger_error() after being converted to a string using _drupal_debug_message().


$data: Data to be output.

$label: Label to prefix the data.

$print_r: Flag to switch between print_r() and var_export() for data conversion to string. Set $print_r to TRUE when dealing with a recursive data structure as var_export() will generate an error.

1 call to debug()
SimpleTestFunctionalTest::stubTest in drupal/modules/simpletest/simpletest.test
Test to be run and the results confirmed.
5 string references to 'debug'
CommentInterfaceTest::setEnvironment in drupal/modules/comment/comment.test
Re-configures the environment, module settings, and user permissions.
DrupalTestCase::error in drupal/modules/simpletest/drupal_web_test_case.php
Fire an error assertion.
simpletest_result_status_image in drupal/modules/simpletest/
Get the appropriate image for the status.
watchdog_severity_levels in drupal/includes/
Returns a list of severity levels, as defined in RFC 3164.
_drupal_get_last_caller in drupal/includes/
Gets the last caller from a backtrace.


drupal/includes/, line 7449
Common functions that many Drupal modules will need to reference.


function debug($data, $label = NULL, $print_r = FALSE) {
  // Print $data contents to string.
  $string = check_plain($print_r ? print_r($data, TRUE) : var_export($data, TRUE));

  // Display values with pre-formatting to increase readability.
  $string = '<pre>' . $string . '</pre>';

  trigger_error(trim($label ? "$label: $string" : $string));