function drupal_array_merge_deep

7.x drupal_array_merge_deep()

Merges multiple arrays, recursively, and returns the merged array.

This function is similar to PHP's array_merge_recursive() function, but it handles non-array values differently. When merging values that are not both arrays, the latter value replaces the former rather than merging with it.


$link_options_1 = array('fragment' => 'x', 'attributes' => array('title' => t('X'), 'class' => array('a', 'b')));
$link_options_2 = array('fragment' => 'y', 'attributes' => array('title' => t('Y'), 'class' => array('c', 'd')));

// This results in array('fragment' => array('x', 'y'), 'attributes' => array('title' => array(t('X'), t('Y')), 'class' => array('a', 'b', 'c', 'd'))).
$incorrect = array_merge_recursive($link_options_1, $link_options_2);

// This results in array('fragment' => 'y', 'attributes' => array('title' => t('Y'), 'class' => array('a', 'b', 'c', 'd'))).
$correct = drupal_array_merge_deep($link_options_1, $link_options_2);


...: Arrays to merge.

Return value

The merged array.

See also


2 calls to drupal_array_merge_deep()
BootstrapMiscTestCase::testMisc in drupal/modules/simpletest/tests/bootstrap.test
Test miscellaneous functions in
DrupalWebTestCase::drupalPostAJAX in drupal/modules/simpletest/drupal_web_test_case.php
Execute an Ajax submission.


drupal/includes/, line 2117
Functions that need to be loaded on every Drupal request.


function drupal_array_merge_deep() {
  $args = func_get_args();
  return drupal_array_merge_deep_array($args);