3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A{ private $aaa; function __set($prop, $val){ $this->$aaa = $val; } } $a = new A(); $a->prop = 'String prop'; var_dump($a);
Output for 8.0.0 - 8.0.10, 8.1rc1
Warning: Undefined variable $aaa in /in/VRM4v on line 7 Warning: Undefined variable $aaa in /in/VRM4v on line 7 object(A)#1 (2) { ["aaa":"A":private]=> NULL [""]=> string(11) "String prop" }
Output for 7.3.0 - 7.3.30, 7.4.0 - 7.4.23
Notice: Undefined variable: aaa in /in/VRM4v on line 7 Notice: Undefined variable: aaa in /in/VRM4v on line 7 object(A)#1 (2) { ["aaa":"A":private]=> NULL [""]=> string(11) "String prop" }

preferences:
17.95 ms | 460 KiB | 5 Q