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@ 2020-06-03T16:57:41Z

<?php

var_dump(isset($some->variable->that["doesn't"]->exist));
var_dump($some->variable->that["doesn't"]->exist ?? 'default value');

Output
Performance
VLD
References
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var_dump: documentation ( source)

preferences:dark modelive previewkey bindings

27.56 ms | 405 KiB | 5 Q