How to break nest loop (problems)
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<?php
$investList = [
[
'id' => 1,
'cash' => 1000,
],
[
'id' => 2,
'cash' => 4000,
],
[
'id' => 3,
'cash' => 1000,
],
[
'id' => 4,
'cash' => 3000,
],
[
'id' => 5,
'cash' => 2000,
],
];
$refundList = [
[
'invest_id' => 1,
'cash' => 1000,
],
[
'invest_id' => 2,
'cash' => 4000,
],
[
'invest_id' => 3,
'cash' => 1000,
],
[
'invest_id' => 4,
'cash' => 3000,
],
[
'invest_id' => 5,
'cash' => 2000,
],
];
foreach($refundList as $index => $refund) {
foreach($investList as $invest) {
if($invest['id'] == $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?
//Solution: https://glot.io/snippets/eggpzzp1tm
Php
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