How to calculate numbers in string from DB in PHP - php

Question

I echo some numbers from the database and show only those numbers with a foreach. I now want to calculate the total of these numbers.
$test = str_replace('\\', '', $orderDetails['jsonData']);
$bonbonOrders = unserialize($test);
foreach($bonbonOrders as $bonbonOrder){
foreach($bonbonOrder as $bonbons){
echo $bonbons['gewicht'];
}
}
I tried several things but I really don't know how I can calculate them.
the output for a example can be:
18 15 16 12 11
Thanks!

Answer 1

This depends how you are getting those numbers from your database. However, since you are deserializing something I will assume that it cannot be done in a simple SQL query.
The following code should echo out the total of all of the numbers.
$test = str_replace('\\', '', $orderDetails['jsonData']);
$bonbonOrders = unserialize($test);
$nums = array();
foreach($bonbonOrders as $bonbonOrder){
foreach($bonbonOrder as $bonbons){
$nums[] =$bonbons['gewicht'];
}
}
$total = array_sum($nums);
echo $total;
Achieved by adding all of the numbers to an array, and calling array_sum on the final array.
Another alternative would have been to create $total = 0 before the foreach and to simply increment it as you get access to each number.

Answer 2

Simply addup each $bonbons['gewicht'] value in a variable and echo it
$test = str_replace('\\', '', $orderDetails['jsonData']);
$bonbonOrders = unserialize($test);
$sum =0;
foreach($bonbonOrders as $bonbonOrder){
foreach($bonbonOrder as $bonbons){
echo $bonbons['gewicht'];
$sum += $bonbons['gewicht'];
}
}
echo $sum;