3v4l.org

run code in 300+ PHP versions simultaneously
<?php class foo { protected $bar = array('baz'); function bar() { array_pop($this->bar); $vars = get_object_vars($this); print_r($vars); $this->bar[] = array('buz'); print_r($vars); } } $f = new foo(); $f->bar();
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.3 - 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
Array ( [bar] => Array ( ) ) Array ( [bar] => Array ( ) )
Output for 7.0.0 - 7.0.2
Array ( [bar] => Array ( ) ) Array ( [bar] => Array ( [0] => Array ( [0] => buz ) ) )
preferences:
180.43 ms | 407 KiB | 5 Q