3v4l.org

run code in 300+ PHP versions simultaneously
<?php $value = $foo->bar->baz->qux ?? null; var_dump($value); $value = $foo->bar->baz->qux; var_dump($value);
Output for 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
NULL Warning: Undefined variable $foo in /in/LZejg on line 7 Warning: Attempt to read property "bar" on null in /in/LZejg on line 7 Warning: Attempt to read property "baz" on null in /in/LZejg on line 7 Warning: Attempt to read property "qux" on null in /in/LZejg on line 7 NULL
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.3.33, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
NULL Notice: Undefined variable: foo in /in/LZejg on line 7 Notice: Trying to get property 'bar' of non-object in /in/LZejg on line 7 Notice: Trying to get property 'baz' of non-object in /in/LZejg on line 7 Notice: Trying to get property 'qux' of non-object in /in/LZejg on line 7 NULL
Output for 7.3.32, 7.4.26
NULL NULL
preferences:
183.04 ms | 408 KiB | 5 Q