[英]Filter part of multidimensional array
我想过滤多维数组的一部分。 我已经使用了array_filter
函数。 当我打印过滤后的数据时,它可以正确显示,但是似乎无法将数据保存回阵列中。
这是预先的多维数组(称为$posted_product_details
),其中包含我想要过滤的内部数组( [data]
):
Array
(
[column_1] => Array
(
[name] => Colour
[data] => Array
(
[0] => Blue
[1] => Green
[2] => Red
[3] => Yellow
[4] =>
[5] =>
[6] =>
[7] =>
[8] =>
[9] =>
)
)
[column_2] => Array
(
[name] => Pack QTY
[data] => Array
(
[0] => 3
[1] => 3
[2] => 3
[3] => 3
[4] =>
[5] =>
[6] =>
[7] =>
[8] =>
[9] =>
)
)
[column_3] => Array
(
[name] => Product Code
[data] => Array
(
[0] => 65030
[1] => 65029
[2] => 65028
[3] => 65031
[4] =>
[5] =>
[6] =>
[7] =>
[8] =>
[9] =>
)
)
[column_4] => Array
(
[name] => Barcode
[data] => Array
(
[0] => 5099570650307
[1] => 5099570650291
[2] => 5099570650284
[3] => 5099570650314
[4] =>
[5] =>
[6] =>
[7] =>
[8] =>
[9] =>
)
)
[column_5] => Array
(
[name] =>
[data] => Array
(
[0] =>
[1] =>
[2] =>
[3] =>
[4] =>
[5] =>
[6] =>
[7] =>
[8] =>
[9] =>
)
)
)
在这里,我尝试遍历数组并过滤数据:
foreach ($posted_product_details as $column => $info) {
$name = $info['name'];
$data = $info['data'];
$info['data'] = array_filter($data);
}
但是,在随后打印阵列时,该阵列没有更改。
在遍历数组时,foreach构造会复制数组的每个部分。 您必须显式调用原始数组进行编辑:
$posted_product_details[$column]['data'] = array_filter($data);
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