3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = [ ["day1" => 1, "day2" => 1, "name" => "Ram"], ["day1" => 1, "day2" => 2, "name" => "Raj"], ["day1" => 1, "day2" => 3, "name" => "Rahul"], ["day1" => 2, "day2" => 3, "name" => "Rocky"] ]; foreach ($array as &$row) { $day1 = min($day1 ?? $row['day1'], $row['day1']); $day2 = max($day2 ?? $row['day2'], $row['day2']); $row['day1'] = &$day1; $row['day2'] = &$day2; } var_export($array);
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
array ( 0 => array ( 'day1' => 1, 'day2' => 3, 'name' => 'Ram', ), 1 => array ( 'day1' => 1, 'day2' => 3, 'name' => 'Raj', ), 2 => array ( 'day1' => 1, 'day2' => 3, 'name' => 'Rahul', ), 3 => array ( 'day1' => 1, 'day2' => 3, 'name' => 'Rocky', ), )
preferences:
127.74 ms | 403 KiB | 121 Q