[英]Merge array with same keys, array_merge_recursive doesn't work as expected
我有兩個ID為鍵的數組和一些字段,我想將它們合並,但是我不明白為什么它不起作用,這是我的示例代碼:
$Podcasts1 = array("1234" => array('title' => "myTitle", "type" => "myType"));
$Podcast2 = array("1234" => array("content" => "myContent"));
$podcasts = array_merge_recursive($Podcasts1, $Podcast2);
var_dump($Podcasts1, $Podcast2, $podcasts);
結果如下:
array:1 [▼
1234 => array:2 [▼
"title" => "myTitle"
"type" => "myType"
]
]
array:1 [▼
1234 => array:1 [▼
"content" => "myContent"
]
]
array:2 [▼
0 => array:2 [▼
"title" => "myTitle"
"type" => "myType"
]
1 => array:1 [▼
"content" => "myContent"
]
]
我想得到的結果是:
array:[
1234 => array(
"title" => "myTitle"
"type" => "myType"
"content" => "myContent")
]
我不明白為什么PHP.net上給出的代碼無法正常工作
碼:
$ar1 = array("color" => array("favorite" => "red"), 5);
$ar2 = array(10, "color" => array("favorite" => "green", "blue"));
$result = array_merge_recursive($ar1, $ar2);
結果:
Array
(
[color] => Array
(
[favorite] => Array
(
[0] => red
[1] => green
)
[0] => blue
)
[0] => 5
[1] => 10
)
將鍵1234更改為類似字符串
$Podcasts1 = array('a' => array('title' => "myTitle", "type" => "myType"));
$Podcast2 = array('a' => array("content" => "myContent"));
$podcasts = array_merge_recursive($Podcasts1, $Podcast2);
var_dump($Podcasts1, $Podcast2, $podcasts);
array_merge_recursive適用於字符串鍵。
如功能說明所述,它不適用於數字鍵
如果輸入數組具有相同的字符串鍵,則這些鍵的值將合並到一個數組中,然后遞歸完成,因此,如果值之一是數組本身,則函數會將其與相應的條目合並在另一個數組中。 但是,如果數組具有相同的數字鍵,則后面的值將不會覆蓋原始值,而是將其附加。
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