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run code in 150+ php & hhvm versions
Bugs & Features
<?php $obj = new stdClass; $dex = (int) "123"; $obj->$dex = "foo"; print_r($obj); $arr = (array) $obj; echo $arr["123"]; echo $arr[123];
based on 2YU0l
Output for 5.4.0 - 5.6.28, 7.0.0 - 7.1.0
stdClass Object ( [123] => foo ) Notice: Undefined offset: 123 in /in/TRPBG on line 7 Notice: Undefined offset: 123 in /in/TRPBG on line 8
Output for hhvm-3.12.0
stdClass Object ( [123] => foo ) Notice: Undefined index: 123 in /in/TRPBG on line 7 Notice: Undefined index: 123 in /in/TRPBG on line 8
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.3.0 - 5.3.29
stdClass Object ( [123] => foo ) Notice: Undefined index: 123 in /in/TRPBG on line 7 Notice: Undefined offset: 123 in /in/TRPBG on line 8
Output for 5.0.0 - 5.2.17
stdClass Object ( [123] => foo ) Notice: Undefined index: 123 in /in/TRPBG on line 7 Notice: Undefined offset: 123 in /in/TRPBG on line 8
Output for 4.3.0 - 4.4.9
stdClass Object ( [123] => foo ) foofoo