3v4l.org

run code in 300+ PHP versions simultaneously
<?php $c = new stdClass; $a = "HIDDEN\000-TEXT"; $c->$a = 'foo'; print_r($c); ?>
Output for 4.3.3 - 4.3.11, 4.4.0 - 4.4.9, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 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 ( [HIDDEN-TEXT] => foo )
Output for 4.3.0 - 4.3.2, 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
stdClass Object ( [HIDDEN] => foo )
preferences:
216.51 ms | 402 KiB | 355 Q