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<?php $a = json_decode('{"b": {"c": {"10": "abc", "11": "def"}}}'); $aa = (array)$a->b->c; var_dump($aa['10']);
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 - 8.1.30, 8.2.0 - 8.2.24, 8.3.0 - 8.3.12
string(3) "abc"
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25
Notice: Undefined offset: 10 in /in/vvikf on line 7 NULL

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