3v4l.org

run code in 500+ PHP versions simultaneously
<?php $a = ["Content-Type" => "text/plain"]; $o = (object) $a; var_dump($o, $o->{"Content-Type"});
Output for 8.1.0 - 8.1.34, 8.2.0 - 8.2.34, 8.3.0 - 8.3.35, 8.4.1 - 8.4.26, 8.5.0 - 8.5.11
object(stdClass)#1 (1) { ["Content-Type"]=> string(10) "text/plain" } string(10) "text/plain"

preferences:
25.16 ms | 1136 KiB | 6 Q