optional chain operator php

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1Optional chaining is not supported in php ( ?. operator )
2But you can use something like this
3
4if ($a && $a->$b && $a->$b->$c) {
5  $d = $a->$b->$c;
6}
7
8$d = $a?->$b?->$c;
9// assigns null to $d upon failure

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