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@ 2024-02-08T19:12:42Z

<?php

$name = 'mickmackusa';

$dob = fn(?int $age): ?int => !$age
    ? null
    : (
          fn($newAge) => (print "$name's age is $newAge\n") ? $newAge : null
      )(2021 - $age);

var_export($dob(null));
echo "\n---\n";
var_export($dob(31));

Output
Performance
VLD
References
Branches

var_export: documentation ( source)

preferences:dark modelive previewkey bindings

92.21 ms | 404 KiB | 5 Q