Php replace array keys with another array keys if key exists - php

Question

I have this array :
Array (amounts)
(
[0] => Array
(
[0] => 95
[1] => 2
)
[1] => Array
(
[0] => 96
[1] => 5
)
)
And this
Array (invoices)
(
[1] =>
[2] => 490
[3] =>
[4] =>
[5] => 1400
)
This is what I am trying to get :
Array
(
[1] =>
[95] => 490 // Id found in Amounts array so replaced id by Key '0'
[3] =>
[4] =>
[96] => 1400 // Id found in Amounts array so replaced id by Key '0'
)
I have tried to deal with the answser found here but without success.
$newamounts = array_combine(array_map(function($key) use ($invoices) {
return $invoices[$key]; // translate key to name
}, array_keys($invoices)), $amounts);
Any help greatly appreciated. Thx

Answer 1

This should work for you:
(Here i go through each innerArray of $amounts with a foreach loop and then i check if the array element in $invoices with the index 1 of the innerArray is not empty and if not i set the new element with the key and value and unset the old one)
<?php
$amounts = array(
array(
95,
2
),
array(
96,
5
)
);
$invoices = array(1 =>"", 2 => 490, 3 => "", 4 => "", 5 => 1500);
foreach($amounts as $innerArray) {
if(!empty($invoices[$innerArray[1]])) {
$invoices[$innerArray[0]] = $invoices[$innerArray[1]];
unset($invoices[$innerArray[1]]);
}
}
print_r($invoices);
?>
Output:
Array ( [1] => [3] => [4] => [95] => 490 [96] => 1500 )