3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = new stdClass; $x->a = 1; $_SESSION['x'] = $x; function smth() { $x = $_SESSION['x']; return $x; } print_r($x); $y = smth(); $y->y = 'A'; print_R($x);
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, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
stdClass Object ( [a] => 1 ) stdClass Object ( [a] => 1 [y] => A )
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9
stdClass Object ( [a] => 1 ) stdClass Object ( [a] => 1 )
preferences:
283.23 ms | 402 KiB | 460 Q