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run code in 150+ php & hhvm versions
Bugs & Features
<?php $obj = new stdClass; $obj->{'123'} = '456'; print_r($obj); echo $obj->{'123'},"\n"; echo $obj->{123},"\n"; $obj->a{"123"} = $obj{'123'}; print_r($obj);
based on Su8s3
Output for 7.0.0 - 7.1.0
stdClass Object ( [123] => 456 ) 456 456 Fatal error: Uncaught Error: Cannot use object of type stdClass as array in /in/t0YOn:7 Stack trace: #0 {main} thrown in /in/t0YOn on line 7
Process exited with code 255.
Output for hhvm-3.12.0
stdClass Object ( [123] => 456 ) 456 456 Fatal error: Object does not implement ArrayAccess in /in/t0YOn on line 7
Process exited with code 255.
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.0.0 - 5.6.28
stdClass Object ( [123] => 456 ) 456 456 Fatal error: Cannot use object of type stdClass as array in /in/t0YOn on line 7
Process exited with code 255.
Output for 4.3.3 - 4.4.9
Fatal error: Property name must be a string in /in/t0YOn on line 6
Process exited with code 255.
Output for 4.3.0 - 4.3.2
stdClass Object ( [123] => 456 ) 456
Process exited with code 139.