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<?php $a = ["Content-Type" => "text/plain"]; $o = (object) $a; var_dump($o, $o->{"Content-Type"});
Output for 8.1.0 - 8.1.31, 8.2.0 - 8.2.26, 8.3.0 - 8.3.15, 8.4.1 - 8.4.2
object(stdClass)#1 (1) { ["Content-Type"]=> string(10) "text/plain" } string(10) "text/plain"
preferences:
50.45 ms | 406 KiB | 5 Q