3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { public $bar; } var_dump(get_object_vars(new Foo)); $blanks = array("", " ", FALSE, TRUE, array(), NULL, "0", 0, 0.0, new stdClass, "\0"); #foreach($blanks as $blank){ var_dump($blank); }
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 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
array(1) { ["bar"]=> NULL }
preferences:
238.74 ms | 404 KiB | 339 Q