<?php
$investList = [
[
'id' => 1,
'cash' => 1000,
],
[
'id' => 2,
'cash' => 4000,
],
[
'id' => 111,
'cash' => 10000,
],
[
'id' => 3,
'cash' => 1000,
],
[
'id' => 4,
'cash' => 3000,
],
[
'id' => 5,
'cash' => 2000,
],
];
$refundList = [
[
'invest_id' => 1,
'cash' => 1000,
],
[
'invest_id' => 2,
'cash' => 4000,
],
[
'invest_id' => 3,
'cash' => 1000,
],
[
'invest_id' => 4,
'cash' => 3000,
],
[
'invest_id' => 5,
'cash' => 2000,
],
[
'invest_id' => 111,
'cash' => 10000,
],
];
$investList = array_combine(array_column($investList, 'id'), $investList);
foreach($refundList as $index => $refund) {
#foreach($investList as $invest) {
#if($invest['id'] == $refund['invest_id']) {
if(isset($investList[$refund['invest_id']])) {
$invest = $investList[$refund['invest_id']];
$refundList[$index]['invest_cash'] = $invest['cash'];
}
#}
#}
}
print_r($refundList);
//When the investList run up to 10000, the loop times can be 10000*10000=100000000, how to optimize this?
