3v4l.org

run code in 300+ PHP versions simultaneously
<?php $obj = new stdClass(); $obj->{123} = "foo"; $obj->{'456'} = "bar"; $arr = (array)$obj; foreach ($arr as $k => $v) { var_dump($arr[$k]); }
Output for 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
string(3) "foo" string(3) "bar"
Output for 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
Notice: Undefined offset: 123 in /in/fGY9u on line 10 NULL Notice: Undefined offset: 456 in /in/fGY9u on line 10 NULL
Output for 5.3.0 - 5.3.29
Notice: Undefined index: 123 in /in/fGY9u on line 10 NULL Notice: Undefined index: 456 in /in/fGY9u on line 10 NULL
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Notice: Undefined index: 123 in /in/fGY9u on line 10 NULL Notice: Undefined index: 456 in /in/fGY9u on line 10 NULL
Output for 4.3.3 - 4.3.11, 4.4.0 - 4.4.9
Fatal error: Property name must be a string in /in/fGY9u on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.2

Process exited with code 139.
preferences:
318.88 ms | 401 KiB | 456 Q