懷疑：php array_merge_recursive的一個bug

$adiff = json_decode('{"28":0,"29":0,"30":0,"31":0,"32":0,"33":0,"34":0,"35":0}',true);$diff = json_decode('{"28":1,"29":1,"30":1,"31":1,"32":1,"33":1,"34":1,"35":1}',true);$adiff = array_merge_recursive($diff,$adiff);var_dump($adiff);

理論上應該返回：

array(16) { [28]=> int(1) [29]=> int(1) [20]=> int(1) [31]=> int(1) [32]=> int(1) [33]=> int(1) [34]=> int(1) [35]=> int(1) [36]=> int(0) [37]=> int(0) [38]=> int(0) [39]=> int(0) [40]=> int(0) [41]=> int(0) [42]=> int(0) [43]=> int(0) }

實際返回：

array(16) { [0]=> int(1) [1]=> int(1) [2]=> int(1) [3]=> int(1) [4]=> int(1) [5]=> int(1) [6]=> int(1) [7]=> int(1) [8]=> int(0) [9]=> int(0) [10]=> int(0) [11]=> int(0) [12]=> int(0) [13]=> int(0) [14]=> int(0) [15]=> int(0) }

這算不算一個bug？

更新：
這個不算bug,只是手冊裡面沒有對數字鍵進行merge時會重設說明清楚。

回複內容：

$adiff = json_decode('{"28":0,"29":0,"30":0,"31":0,"32":0,"33":0,"34":0,"35":0}',true);$diff = json_decode('{"28":1,"29":1,"30":1,"31":1,"32":1,"33":1,"34":1,"35":1}',true);$adiff = array_merge_recursive($diff,$adiff);var_dump($adiff);

理論上應該返回：

array(16) { [28]=> int(1) [29]=> int(1) [20]=> int(1) [31]=> int(1) [32]=> int(1) [33]=> int(1) [34]=> int(1) [35]=> int(1) [36]=> int(0) [37]=> int(0) [38]=> int(0) [39]=> int(0) [40]=> int(0) [41]=> int(0) [42]=> int(0) [43]=> int(0) }

實際返回：

array(16) { [0]=> int(1) [1]=> int(1) [2]=> int(1) [3]=> int(1) [4]=> int(1) [5]=> int(1) [6]=> int(1) [7]=> int(1) [8]=> int(0) [9]=> int(0) [10]=> int(0) [11]=> int(0) [12]=> int(0) [13]=> int(0) [14]=> int(0) [15]=> int(0) }

這算不算一個bug？

更新：
這個不算bug,只是手冊裡面沒有對數字鍵進行merge時會重設說明清楚。

手冊中提到了：

If, however, the arrays have the same numeric key, the later value will not overwrite the original value, but will be appended.

如果兩個數組存在相同的數字鍵名，則會在數組最後建立一個索引（雖然手冊中沒提到索引會重設）。

這種情況下推薦使用array_replace_recursive（PHP≥5.3）。

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