Online PHP editor | output for nqbkU

<?php declare(strict_types=1); function a(): void { $_ = [1, 2, throw new Exception('a')]; echo 'unreachable!'; } function b(): void { $_ = strlen(throw new Exception('b')); echo 'unreachable!'; } function c(): void { $_ = 1 + 2 + throw new Exception('c'); echo 'unreachable!'; } try { try { try { a(); } catch (Exception) { b(); } } catch (Exception) { c(); } } catch (Exception) { echo 'done'; }