[英]how to delete a key in array and rebuild the array in php
我得到以下数组
array(3) {
[0] =>
array(1) {
'Investment' =>
array(15) {
'id' =>
string(36) "53d64bec-031c-4732-b2e0-755799154b1b" ...
我想删除投资密钥,并执行新数组
array(3) {
[0] =>
array(15) {
'id' =>
string(36) "53d64bec-031c-4732-b2e0-755799154b1b" ...
我该怎么做?
我会这样将数组传递给array_map
:
$array = [
[ 'Investment' => [ 'id' => '13d64bec-031c-4732-b2e0-755799154b1b' ] ],
[ 'Investment' => [ 'id' => '23d64bec-031c-4732-b2e0-755799154b1b' ] ],
[ 'Investment' => [ 'id' => '33d64bec-031c-4732-b2e0-755799154b1b' ] ],
[ 'Investment' => [ 'id' => '43d64bec-031c-4732-b2e0-755799154b1b' ] ]
];
$mappedArray = array_map(function($val) {
return $val['Investment'];
}, $array);
将投资数组存储在临时变量中,未设置,如下所示
$tempArr = // 0 index of your array
foreach($tempArr as $key=>$val){
if(!empty($val['Investment'])){
$temp = $val['Investment'];
unset($val['Investment']);
$val[] = $temp;
}
}
您可以使用array_map()并为每个项目返回“投资”键的值。
$newArray = array_map(function($item) {
return $item['Investment'];
}, $oldArray);
如果您不想复制该数组,则可以尝试使用array_walk() 。
编辑:使用array_walk()的解决方案
array_walk($oldArray, function(&$item) {
$item = $item['Investment'];
});
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