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<?php $arr = [5,6,7]; $obj = (object)$arr; var_dump($obj); $obj->{'0'} = 'zzz'; var_dump($obj, $obj->{0}, $obj->{'0'}); $tmp = (array)$obj; var_dump($tmp, $tmp[0], $tmp['0']);
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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
object(stdClass)#1 (3) { ["0"]=> int(5) ["1"]=> int(6) ["2"]=> int(7) } object(stdClass)#1 (3) { ["0"]=> string(3) "zzz" ["1"]=> int(6) ["2"]=> int(7) } string(3) "zzz" string(3) "zzz" array(3) { [0]=> string(3) "zzz" [1]=> int(6) [2]=> int(7) } string(3) "zzz" string(3) "zzz"
Output for 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25
object(stdClass)#1 (3) { [0]=> int(5) [1]=> int(6) [2]=> int(7) } object(stdClass)#1 (4) { [0]=> int(5) [1]=> int(6) [2]=> int(7) ["0"]=> string(3) "zzz" } string(3) "zzz" string(3) "zzz" array(4) { [0]=> int(5) [1]=> int(6) [2]=> int(7) ["0"]=> string(3) "zzz" } int(5) int(5)

preferences:
140.79 ms | 408 KiB | 5 Q