从数组中提取元素，其键以PHP中的特定id结尾
如何提取键以 id 结尾的元素？
我想通过键将一个数组分成两个数组，其中每个元素都有一个以它的 id 结尾的键。
数组：
array(
'key_1' => 'some value 1',
'key_2' => 'some value 2',
);
现在，我有两个 ID，1 和 2。
预期的数组：
array_one(
'id' => 1,
'value' => 'some value 1',
);
array_two(
'id' => 2,
'value' => 'some value 2',
);
实际上，我有一个来自表单的 $_POST 数组。每个键都以其 Id 结尾，我想通过它们的 Id 将主数组分成两个数组。
这是我拥有的数组：
Array
(
[itemId_1] => 1
[product_id_1] => 1
[desc_1] => desc for the first item
[quantity_1] => 5
[unit_1] => kilogram
[priceUnit_1] => 100
[discount_1] => 0
[taxCost_1] => 45
[itemId_2] => 2
[product_id_2] => 2
[desc_2] => desc for the second item
[quantity_2] => 10
[unit_2] => metre
[priceUnit_2] => 150
[discount_2] => 0
[taxCost_2] => 135
)
现在，我希望这些数组将它们中的每一个保存到数据库中。数组必须用 itemId 分隔：
Array
(
[itemId] => 1
[product_id] => 1
[desc] => desc for the first item
[quantity] => 5
[unit] => kilogram
[priceUnit] => 100
[discount] => 0
[taxCost] => 45
)
Array
(
[itemId] => 2
[product_id] => 2
[desc] => desc for the second item
[quantity] => 10
[unit] => metre
[priceUnit] => 150
[discount] => 0
[taxCost] => 135
)
30秒到达战场2回答
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鸿蒙传说
您可以foreach像这样编辑数组并将结果存储在新数组中。$items = array( 'key_1' => 'some value 1', 'key_2' => 'some value 2',);$result = array(); foreach ($items as $index => $value){ $id = str_replace('key_','',$index); $result['array_'.$id] = [ 'id' => $id, 'value' => $value, ];}extract($result); // must return array_1 and array_2 -
繁星淼淼
好的，我已经这样做了：foreach ($_POST as $key => $value) { $array{$id[1]} = array(); $id = explode('_', $key); ${"array" . $id[1]}[] = array($id[0] => $value); } $array1 = call_user_func_array('array_merge', $array1); var_dump($array1); $array2 = call_user_func_array('array_merge', $array2); var_dump($array2);这会给我两个数组： Array( [itemId] => 1 [product_id] => 1 [desc] => desc for the first item [quantity] => 5 [unit] => kilogram [priceUnit] => 100 [discount] => 0 [taxCost] => 45) Array( [itemId] => 2 [product_id] => 2 [desc] => desc for the second item [quantity] => 10 [unit] => metre [priceUnit] => 150 [discount] => 0 [taxCost] => 135)
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