Php array transformation and combination - php

Question

So I have array like this one
[
'custid' => [
'customer_number_1' => '20098374',
'customer_number_8' => '20098037',
'customer_number_15' => '20098297'
],
'destid' => [
'destination_numbers_1' => [
(int) 0 => '20024838',
(int) 1 => '20041339'
],
'destination_numbers_8' => [
(int) 0 => '20008293'
],
'destination_numbers_15' => [
(int) 0 => '20016969',
(int) 1 => '20022919',
(int) 2 => '20025815',
(int) 3 => '20026005',
(int) 4 => '20027083',
(int) 5 => '20045497'
]
]
]
Goal is to merge cust id with destid in pairs and should look like so
[
(int) 0 => [
'user_id' => (int) 1,
'sap_customer_id' => '20098374',
'sap_destination_id' => '20024838'
],
(int) 1 => [
'user_id' => (int) 1,
'sap_customer_id' => '20098374',
'sap_destination_id' => '20041339',
],
(int) 2 => [
'user_id' => (int) 1,
'sap_customer_id' => '20098037',
'sap_destination_id' => '20008293,
],
(int) 3 => [
'user_id' => (int) 1,
'sap_customer_id' => '20098297'
'sap_destination_id' => '20016969',
],
...
I have tried with code below, but I am getting destination_id number as array and duplicated customer numbers. Also I have tried with array walk but result is same.
$data = [];
foreach ($sap_data['custid'] as $custid) {
foreach ($sap_data['destid'] as $destid) {
$data[] = [
'user_id' => 1,
'sap_customer_id' => $custid,
'sap_destination_id' => $destid
];
}
}
Thx for helping!

Answer 1

You should make inner loop in other way
foreach($sap_data['custid'] as $k => $custid) {
// Make destination key
$dkey = str_replace('customer_number', 'destination_numbers', $k);
// And get array, for example, destination_numbers_1 for customer_number_1
foreach ($sap_data['destid'][$dkey] as $destid) {
$data[] = [
'user_id' => 1,
'sap_customer_id' => $custid,
'sap_destination_id' => $destid
];
}
}
demo on eval.in