public static function WebformArrayHelper::getFirstKey in Webform 8.5

Same name and namespace in other branches

1. 6.x src/Utility/WebformArrayHelper.php \Drupal\webform\Utility\WebformArrayHelper::getFirstKey()

Get the first key in an array.

Parameters

array $array: An array.

Return value

string|null The first key in an array.

4 calls to WebformArrayHelper::getFirstKey()

WebformArrayHelperTest::testGetKey in tests/src/Unit/Utility/WebformArrayHelperTest.php

Tests navigating an associative array's keys.

WebformSubmissionForm::getCurrentPage in src/WebformSubmissionForm.php

Get the current page's key.

WebformSubmissionForm::getFirstPage in src/WebformSubmissionForm.php

Get first page's key.

WebformSubmissionListBuilder::__construct in src/WebformSubmissionListBuilder.php

Constructs a new WebformSubmissionListBuilder object.

File

src/Utility/WebformArrayHelper.php, line 97

Class

WebformArrayHelper

Provides helper to operate on arrays.

Namespace

Drupal\webform\Utility

Code

public static function getFirstKey(array $array) {
  $keys = array_keys($array);
  return reset($keys);
}