479      * @param  mixed $target
484     function data_get($target, $key, $default = null)  argument
487             return $target;
491             if (is_array($target)) {
492                 if (!array_key_exists($segment, $target)) {
496                 $target = $target[$segment];
497             } elseif ($target instanceof ArrayAccess) {
498                 if (!isset($target[$segment])) {
502                 $target = $target[$segment];
503             } elseif (is_object($target)) {
504                 if (!isset($target->{$segment})) {
508                 $target = $target->{$segment};
514         return $target;
1682      * @param  mixed $target
1687     function data_fill(&$target, $key, $value)  argument
1689         return data_set($target, $key, $value, false);
1697      * @param  mixed  $target
1703     function data_set(&$target, $key, $value, $overwrite = true)  argument
1707             if (! accessible($target)) {
1708                 $target = [];
1711                 foreach ($target as &$inner) {
1715                 foreach ($target as &$inner) {
1719         } elseif (accessible($target)) {
1721                 if (! exists($target, $segment)) {
1722                     $target[$segment] = [];
1724                 data_set($target[$segment], $segments, $value, $overwrite);
1725             } elseif ($overwrite || ! exists($target, $segment)) {
1726                 $target[$segment] = $value;
1728         } elseif (is_object($target)) {
1730                 if (! isset($target->{$segment})) {
1731                     $target->{$segment} = [];
1733                 data_set($target->{$segment}, $segments, $value, $overwrite);
1734             } elseif ($overwrite || ! isset($target->{$segment})) {
1735                 $target->{$segment} = $value;
1738             $target = [];
1740                 data_set($target[$segment], $segments, $value, $overwrite);
1742                 $target[$segment] = $value;
1745         return $target;