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<?php $o = new \stdClass(); $o->foo = 'bar'; var_dump($o); $a = ['foo' => 'Hello']; var_dup($a);
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
object(stdClass)#1 (1) { ["foo"]=> string(3) "bar" } Fatal error: Uncaught Error: Call to undefined function var_dup() in /in/nPuQi:6 Stack trace: #0 {main} thrown in /in/nPuQi on line 6
Process exited with code 255.

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