Warning : A non-numeric value encountered & Fatal error : Uncaught DivisionByZeroError: Modulo by zero

Question

I want to filter the products that have size Like S, M, L

This table is a product table

id | size
------------
 1 | S,M
 2 | S,M,L
 3 | S
 4 | M,L

This is the Shirtsize database structure:

id | size
------------
 1 | S
 2 | M
 3 | L

I have SQL problem to get these values.

if(isset($_POST["size"]))
{
    $size_filter = implode('|', $_POST["size"]);
    $s = implode(',', $_POST["size"]);
    echo $query .= ' AND size rlike "^'.($size_filter).'" AND  size like('%".$s."%')';
   // $query .= 'AND  size like('%".$s."%')';   
}

I used this SQL query it's working in PHPMyAdmin but product no displayed in the frontend

SELECT * FROM products WHERE status = '1' AND size rlike "^M" OR size like('%M%')    

SELECT * FROM products WHERE status = '1' AND size rlike "^M|L" OR size like('%M|L%')

This query working only in PHPMyAdmin but use that in localhost frontend got this error

Warning : A non-numeric value encountered in C:\xampp\htdocs\DU\fetch_data.php on line 28 
Warning : A non-numeric value encountered in C:\xampp\htdocs\DU\fetch_data.php on line 28 
Fatal error : Uncaught DivisionByZeroError: Modulo by zero in C:\xampp\htdocs\DU\fetch_data.php:28 Stack trace: #0 {main} thrown in