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<?php $small_num = '9999'; $large_num = '9999999999999999999999999999999'; $obj = new stdClass; $obj->$small_num = true; $obj->$large_num = true; $arr = (array)$obj; var_dump(array( 'isset_small_num_key' => isset($arr[$small_num]), 'isset_large_num_key' => isset($arr[$large_num]), ));
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) { ["isset_small_num_key"]=> bool(true) ["isset_large_num_key"]=> bool(true) }
Output for 5.4.2 - 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) { ["isset_small_num_key"]=> bool(false) ["isset_large_num_key"]=> bool(true) }
preferences:
184.83 ms | 403 KiB | 257 Q