3v4l.org

run code in 300+ PHP versions simultaneously
<?php class foo { function __construct () { $this->bar = 1; } function add() { $this->bar+=1; } } $one = $two = $three = new foo(); $one->add(); var_dump($one); var_dump($two);
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Deprecated: Creation of dynamic property foo::$bar is deprecated in /in/1Tnq4 on line 4 object(foo)#1 (1) { ["bar"]=> int(2) } object(foo)#1 (1) { ["bar"]=> int(2) }
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 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
object(foo)#1 (1) { ["bar"]=> int(2) } object(foo)#1 (1) { ["bar"]=> int(2) }
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9
Notice: Undefined property: bar in /in/1Tnq4 on line 8 object(foo)(1) { ["bar"]=> int(1) } object(foo)(0) { }

preferences:
353.85 ms | 402 KiB | 460 Q