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<?php $arr = ["prefix" => "a", "children" => ["prefix" => "b", "children" => ["prefix" => "c", "children" => []]]]; function getPrefix($v, $k) { global $ps; if ($k == "prefix") $ps[] = $v; } array_walk_recursive($arr, 'getPrefix'); print_r($ps); echo implode("/", $ps);
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
Array ( [0] => a [1] => b [2] => c ) a/b/c
preferences:
141.25 ms | 403 KiB | 212 Q