3v4l.org

run code in 300+ PHP versions simultaneously
<?php function coolPluck($array, $lookup) { $output = array(); foreach($array as $k => $v) { if($k === $lookup) { $output[$k] = $v; } if(is_array($v)) { $results = coolPluck($v, $lookup); if(isset($results[$lookup]) && isset($output[$lookup])) { if (is_array($output)) { $output[$lookup] = array_merge($output[$lookup], $results[$lookup]); } else { $output[$lookup] = array($output[$lookup], $results[$lookup]); } } else { $output = array_merge($output, $results); } } } return $output; } $testArray = array('test' => array('percy' => array('percy' => 'hatcherson'), 'percy' => array('mitchell', 'anderson'))); var_dump(coolPluck($testArray, 'percy'));

preferences:
47.79 ms | 402 KiB | 5 Q