php的json_encode函数问题,phpjson_encode函数 php的json_encode函数问题: $ary = []; $ary[0] = 'a'; $ary[1] = 'b'; echo json_encode($ary) . ''; echo json_encode($ary, JSON_FORCE_OBJECT); 结果: ["a","b"]{"0":"a","1":"b"}