3v4l.org

run code in 300+ PHP versions simultaneously
<?php $clazz = new class { public $foo = null; }; $clazzy = new $clazz(); $clazzy->fooo = "bar"; var_dump($clazz, $clazzy);
Output for 8.2.0 - 8.2.27, 8.3.0 - 8.3.16, 8.4.1 - 8.4.3
Deprecated: Creation of dynamic property class@anonymous::$fooo is deprecated in /in/opivb on line 8 object(class@anonymous)#1 (1) { ["foo"]=> NULL } object(class@anonymous)#2 (2) { ["foo"]=> NULL ["fooo"]=> string(3) "bar" }
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 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 - 8.1.31
object(class@anonymous)#1 (1) { ["foo"]=> NULL } object(class@anonymous)#2 (2) { ["foo"]=> NULL ["fooo"]=> string(3) "bar" }

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