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<?php $obj = new stdClass(); $obj->{123} = "foo"; $obj->{'456'} = "bar"; $arr = (array)$obj; var_dump($arr); var_dump($arr['123'], $arr[123]); var_dump($arr['456'], $arr[456]); foreach ($arr as $key => $val) { var_dump($key, $val); }
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
array(2) { [123]=> string(3) "foo" [456]=> string(3) "bar" } string(3) "foo" string(3) "foo" string(3) "bar" string(3) "bar" int(123) string(3) "foo" int(456) string(3) "bar"
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33
array(2) { ["123"]=> string(3) "foo" ["456"]=> string(3) "bar" } Notice: Undefined offset: 123 in /in/cIZ6k on line 10 Notice: Undefined offset: 123 in /in/cIZ6k on line 10 NULL NULL Notice: Undefined offset: 456 in /in/cIZ6k on line 11 Notice: Undefined offset: 456 in /in/cIZ6k on line 11 NULL NULL string(3) "123" string(3) "foo" string(3) "456" string(3) "bar"
Output for 5.3.0 - 5.3.29
array(2) { ["123"]=> string(3) "foo" ["456"]=> string(3) "bar" } Notice: Undefined index: 123 in /in/cIZ6k on line 10 Notice: Undefined offset: 123 in /in/cIZ6k on line 10 NULL NULL Notice: Undefined index: 456 in /in/cIZ6k on line 11 Notice: Undefined offset: 456 in /in/cIZ6k on line 11 NULL NULL string(3) "123" string(3) "foo" string(3) "456" string(3) "bar"
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
array(2) { ["123"]=> string(3) "foo" ["456"]=> string(3) "bar" } Notice: Undefined index: 123 in /in/cIZ6k on line 10 Notice: Undefined offset: 123 in /in/cIZ6k on line 10 NULL NULL Notice: Undefined index: 456 in /in/cIZ6k on line 11 Notice: Undefined offset: 456 in /in/cIZ6k on line 11 NULL NULL string(3) "123" string(3) "foo" string(3) "456" string(3) "bar"
Output for 4.3.3 - 4.3.11, 4.4.0 - 4.4.9
Fatal error: Property name must be a string in /in/cIZ6k on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.2

Process exited with code 139.
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