function twig_get_array_keys_filter in Zircon Profile 8

Same name and namespace in other branches

1. 8.0 vendor/twig/twig/lib/Twig/Extension/Core.php \twig_get_array_keys_filter()

Returns the keys for the given array.

It is useful when you want to iterate over the keys of an array:

<pre> {% for key in array|keys %} {# ... #} {% endfor %} </pre>

Parameters

array $array An array:

Return value

array The keys

1 string reference to 'twig_get_array_keys_filter'

Twig_Extension_Core::getFilters in vendor/twig/twig/lib/Twig/Extension/Core.php

File

vendor/twig/twig/lib/Twig/Extension/Core.php, line 884

Code

function twig_get_array_keys_filter($array) {
  if ($array instanceof Traversable) {
    return array_keys(iterator_to_array($array));
  }
  if (!is_array($array)) {
    return array();
  }
  return array_keys($array);
}