how to run loop with php mysql display results according to months with total of columns value

I am trying to get output as below image:

Below is my table structure and entries:

I have tried with below query:

$from_date = '2018-04-01';  
$to_date = '2018-09-2018';  

$cid = mysqli_query($con_db,"SELECT * FROM tbl_silver_stock WHERE stockdate between '$from_date' and '$to_date'");

I am having issue with how to check month is complete and get the total values of columns.

Please help me.

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