Scope Rooms · Level 6 of 7

fn packs everything it uses

An arrow function uses an outside variable without any use clause.

1<?php2$rate = 2;3$double = fn (int $x) => $x * $rate;4$rate = 3;5echo $double(5), PHP_EOL;6$bump = fn () => ++$rate;7echo $bump(), PHP_EOL;8echo $rate, PHP_EOL;

1. Predict the output

Tap the lines in the order you think they print.

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