How to insert multidimensional array in database using laravel - laravel

Question

I have a multidimensional array which contains employee salaries according to salary year with its respective months. I want to insert salaries of different year at different row with their respective months values. I also have one year column and 12 months column in database table. Please guide me how should I insert salaries of employees at different row in table.
My multidimensional array structure is like this:-
Array
(
[2016] => Array
(
[jan] => 15000
[feb] => 15000
[mar] => 15000
[apr] => 15000
[may] => 15000
[jun] => 15000
[jul] => 15000
[aug] => 15000
[sep] => 15000
[oct] => 15000
[nov] => 15000
[dec] => 15000
)
[2017] => Array
(
[jan] => 20000
[feb] => 20000
[mar] => 20000
[apr] => 20000
[may] => 20000
[jun] => 20000
[jul] => 20000
[aug] => 20000
[sep] => 20000
[oct] => 20000
[nov] => 20000
[dec] => 20000
)
)

Answer 1

You must flatten your array, you need an array like :
$data = [
['year'=>'2016', 'month'=>'1', 'salary' => 15000],
['year'=>'2016', 'month'=>'2', 'salary' => 15000],
// ... and so on
Then you can just insert using your model like :
YourSalaryModel::insert($data);

Answer 2

Q. Why aren't you saving them (or saved them) at that point in time i.e Jan 2017? (but that's an aside q)
I would have a salaries' table with a date column (2016-01-01), user_id, and a salary (whether int, or float/double depending on if they are always integer or can be float).
In your example, it is a case of doing two loops:
foreach ($salaries as $year => $months) {
foreach ($months as $month => $salary) {
// carbon parse to create a date
//insert into the table
}
}