3v4l.org

run code in 300+ PHP versions simultaneously
<?php $data = [ ['tutor_name' => 'John Doe', 'course_day' => 'Monday'], ['tutor_name' => 'John Doe', 'course_day' => 'Tuesday'] ]; function translate_to_cz ($day) { switch ($day) { case "Monday": $day_cz = "Pondělí"; break; case "Tuesday": $day_cz = "Úterý"; break; } return $day_cz; } foreach ($data as &$value) { $value['course_day_cz'] = translate_to_cz($value['course_day']); } print_r($data);
Output for 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
Array ( [0] => Array ( [tutor_name] => John Doe [course_day] => Monday [course_day_cz] => Pondělí ) [1] => Array ( [tutor_name] => John Doe [course_day] => Tuesday [course_day_cz] => Úterý ) )

preferences:
173.76 ms | 408 KiB | 5 Q