3v4l.org

run code in 500+ PHP versions simultaneously
<?php $summary = [ "person1" => [ 'question1' => '3', 'question2' => '5' ], "person2" => [ 'question1' => '2', 'question2' => '3' ], "person3" => [ 'question1' => '1', 'question2' => '2' ] ]; var_export( array_map(fn($questions) => ['questions' => array_sum($questions)], $summary) );
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.21, 8.5.0 - 8.5.7
array ( 'person1' => array ( 'questions' => 8, ), 'person2' => array ( 'questions' => 5, ), 'person3' => array ( 'questions' => 3, ), )
preferences:
95.48 ms | 1284 KiB | 4 Q