Creating Array inside another array using foreach loop php - php

Question

Its been four hours I have search everywhere on google and SOF but unable to find the answer. This is what i have tried so far. Here is my code so far
$tmp_array = array();
foreach ($cms as $key => $val) {
$cDate = date('Ym', strtotime($val['day_date']));
$tmp_ids[] = $val['id'];
if (array_key_exists($cDate, $tmp_array)) {
$tmp_array[$cDate]['new_visitors'] += $val['new_visitors'];
$tmp_array[$cDate]['ids'] = $tmp_ids;
} else {
$tmp_array[$cDate]['new_visitors'] = $val['new_visitors'];
$tmp_array[$cDate]['ids'] = $tmp_ids;
}
}
its output is coming like this,
Array
(
[202001] => Array
(
[new_visitors] => 797
[ids] => Array
(
[0] => 31
[1] => 32
)
)
[202002] => Array
(
[new_visitors] => 461
[ids] => Array
(
[0] => 31
[1] => 32
[2] => 33
[3] => 34
)
)
)
but i want the result array like this,
Array
(
[202001] => Array
(
[new_visitors] => 797
[ids] => Array
(
[0] => 31
[1] => 32
)
)
[202002] => Array
(
[new_visitors] => 461
[ids] => Array
(
[0] => 33
[1] => 34
)
)
)
Any suggestions, what am i doing in my code?
The ids are basicall primary key of the table and the "new_visitors" are count of the visitor those who visit on my site. but i havent find any solution so far.
Here is my $cms array.
Array
(
[0] => Array
(
[id] => 31
[day_date] => 2020-01-30 00:00:00
[new_visitors] => 459
)
[1] => Array
(
[id] => 32
[day_date] => 2020-01-31 00:00:00
[new_visitors] => 338
)
[2] => Array
(
[id] => 33
[day_date] => 2020-02-01 00:00:00
[new_visitors] => 242
)
[3] => Array
(
[id] => 34
[day_date] => 2020-02-02 00:00:00
[new_visitors] => 219
)
)

Answer 1

Thank you misorude, your comment worked
$tmp_array = array();
foreach ($cms as $key => $val) {
$cDate = date('Ym', strtotime($val['day_date']));
if (array_key_exists($cDate, $tmp_array)) {
$tmp_array[$cDate]['new_visitors'] += $val['new_visitors'];
$tmp_array[$cDate]['ids'][] = $val['id'];
} else {
$tmp_array[$cDate]['new_visitors'] = $val['new_visitors'];
$tmp_array[$cDate]['ids'][] = $val['id'];
}
}

Answer 2

$arr = [
['id' => 31 ,'day_date'=> "2020-01-30 00:00:00", 'new_visitors' => 459],
['id' => 32 ,'day_date'=> "2020-01-31 00:00:00", 'new_visitors' => 338],
['id' => 33 ,'day_date'=> "2020-02-01 00:00:00", 'new_visitors' => 242],
['id' => 34 ,'day_date'=> "2020-02-02 00:00:00", 'new_visitors' => 219]
];
echo "<pre>";
print_r($arr);
$data = [];
$add_visitor = 0;
$day_date = '';
foreach($arr as $arr_value){
if(date('Ym', strtotime($arr_value['day_date'])) != $day_date){
$add_visitor = 0;
}
$add_visitor += $arr_value['new_visitors'];
$data[date('Ym', strtotime($arr_value['day_date']))]['new_visitors'] = $add_visitor;
$data[date('Ym', strtotime($arr_value['day_date']))]['ids'][] = $arr_value['id'];
$day_date = date('Ym', strtotime($arr_value['day_date']));
}
print_r($data);