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<?php $_GET = [ 'myserver' => [ 'state'=>'10' ] ]; $existingJson = '{ "key1": "val1", "key2": "val2" }'; $array = json_decode($existingJson, true); $newArray = array_merge_recursive($array, $_GET); print_r($newArray);
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 - 8.3.26, 8.4.1 - 8.4.13
Array ( [key1] => val1 [key2] => val2 [myserver] => Array ( [state] => 10 ) )

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