How to concatenate two array in php - php

Question

How to concatenate two arrays to a single array? In date position 0 and 1 are both concatenated in loop, my array code below here.
Array
(
[Apr-2019] => Array
(
[0] => Array
(
[DateUser] => Apr-2019
[withdarw_amount] => 4.00
)
[1] => Array
(
[current_deposit_amount] => 1.00
[current_deposit_table_refer] => 0.00
[current_deposit_user_refer] => 0.10
[DateUser] => Apr-2019
)
)
)
like my output:
[Apr-2019] => Array
(
[DateUser] => Apr-2019
[withdarw_amount] => 4.00
[current_deposit_amount] => 1.00
[current_deposit_table_refer] => 0.00
[current_deposit_user_refer] => 0.10
[DateUser] => Apr-2019
)
I have tried to use this code,
$data = array_merge($withdrow_amount,$data_casback,$cashbonus_data,$data_discount,$CurrentDeposit);
$months = array();
foreach($data as $date) {
$month = substr($date['DateUser'], 0, 8);
$months[$month][] = $date;
}
echo '<pre>'; print_r($months); die;

Answer 1

You can iterate over your array, using array_merge with the splat operator ... to flatten the internal arrays. Note you can't have two DateUser keys in an array so one will be deleted; assuming they have the same values as in your data that will not be a problem:
$array = array (
'Apr-2019' =>
array (
0 =>
array (
'DateUser' => 'Apr-2019',
'withdarw_amount' => 4.00
),
1 =>
array (
'current_deposit_amount' => 1.00,
'current_deposit_table_refer' => 0.00,
'current_deposit_user_refer' => 0.10,
'DateUser' => 'Apr-2019'
),
),
'Jun-2019' =>
array (
0 =>
array (
'DateUser' => 'Jun-2019',
'withdarw_amount' => 334.00
),
)
);
foreach ($array as &$arr) {
$arr = array_merge(...$arr);
}
print_r($array);
Output:
Array
(
[Apr-2019] => Array
(
[DateUser] => Apr-2019
[withdarw_amount] => 4
[current_deposit_amount] => 1
[current_deposit_table_refer] => 0
[current_deposit_user_refer] => 0.1
)
[Jun-2019] => Array
(
[DateUser] => Jun-2019
[withdarw_amount] => 334
)
)
Demo on 3v4l.org

Answer 2

You can use simple loops also to do that -
$new = [];
foreach ($array as $key =>$a) {
$new[$key] = []; // Define with key
foreach ($a as $v) {
$new[$key] += $v; // Concat
}
}