Merges multiple arrays, recursively, and returns the merged array.
This function is equivalent to NestedArray::mergeDeep(), except the input arrays are passed as a single array parameter rather than a variable parameter list.
The following are equivalent:
The following are also equivalent:
public static function mergeDeepArray(array $arrays, $preserve_integer_keys = FALSE) {
$result = array();
foreach ($arrays as $array) {
foreach ($array as $key => $value) {
// Renumber integer keys as array_merge_recursive() does unless
// $preserve_integer_keys is set to TRUE. Note that PHP automatically
// converts array keys that are integer strings (e.g., '1') to integers.
if (is_integer($key) && !$preserve_integer_keys) {
$result[] = $value;
}
elseif (isset($result[$key]) && is_array($result[$key]) && is_array($value)) {
$result[$key] = self::mergeDeepArray(array(
$result[$key],
$value,
), $preserve_integer_keys);
}
else {
$result[$key] = $value;
}
}
}
return $result;
}