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>
array $array An array:
array The keys
function twig_get_array_keys_filter($array) {
if (is_object($array) && $array instanceof Traversable) {
return array_keys(iterator_to_array($array));
}
if (!is_array($array)) {
return array();
}
return array_keys($array);
}