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run code in 300+ PHP versions simultaneously
<?php $a = ['baz' => 7]; $b = (string) $a['foo'] ?? 'bar'; $c = (string) $a['baz'] ?? 'some thing else'; $d = (string) ($a['foo'] ?? 'bar'); var_dump($b, $c, $d);

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26.24 ms | 404 KiB | 5 Q