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<?php echo json_encode([]); echo PHP_EOL; echo json_encode( [ 12 => [ 'a' => 1, 'b' => 2 ], 13 => [ 'c'=>4, 'd'=>'e' ] ] ); echo PHP_EOL . '----' . PHP_EOL;; echo json_encode([], JSON_FORCE_OBJECT); echo PHP_EOL; echo json_encode( [ 12 => [ 'a' => 1, 'b' => 2 ], 13 => [ 'c'=>4, 'd'=>'e' ] ], JSON_FORCE_OBJECT );

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