3v4l.org

run code in 500+ PHP versions simultaneously
<?php $array = [ [1, 2, 3], [1, 3], [1, 2, 4, 3], [1, 3, 4] ]; $result = []; foreach ($array as $row) { $count = count($row); $key = $row[0] . '-' . $row[array_key_last($row)]; if (!isset($result[$key]) || $count < $result[$key][0]) { $result[$key] = [$count, $row]; } } var_export(array_column($result, 1));
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.32, 8.3.0 - 8.3.33, 8.4.1 - 8.4.24, 8.5.0 - 8.5.9
array ( 0 => array ( 0 => 1, 1 => 3, ), 1 => array ( 0 => 1, 1 => 3, 2 => 4, ), )
preferences:
115.24 ms | 1304 KiB | 4 Q