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12 changes: 10 additions & 2 deletions includes/common.inc
Original file line number Diff line number Diff line change
Expand Up @@ -3076,10 +3076,18 @@ function element_child($key) {
}

/**
* Get keys of a structured array tree element that are not properties (i.e., do not begin with '#').
* Get keys of a structured array tree element that are not properties
* (i.e., do not begin with '#').
*/
function element_children($element) {
return array_filter(array_keys((array) $element), 'element_child');
$results = array();
foreach ((array) $element as $key => $value) {
// Inlined call to element_child() for performance reasons.
if (!isset($key[0]) || $key[0] != '#') {
$results[] = $key;
}
}
return $results;
}

/**
Expand Down