How to update main array in laravel - arrays

Question

I Need help on updating Main Array with its data changed in a foreach loop.
Here is my code :
$query = DB::table('autostk')
->where('autostk.branchid', $branch_id)
->where('autostk.itemcode', $request->itemcode)
->whereDate('autostk.date', '<=', $request->tdate)
->where('autostk.branchid', $branch_id)
->leftjoin('journal', 'autostk.refno', '=', 'journal.vno')
->where('journal.code', '>=', 100)
->where('journal.branchid', $branch_id)
->leftjoin('accounts', 'journal.code', '=', 'accounts.code')
->where('accounts.branchid', $branch_id)
->select('journal.code', 'accounts.title', 'autostk.*')
->orderBY('date')->get()
->map(function ($item, $key) {
return (array)$item;
})
->all();
foreach ($query as $row) {
if (is_null($row['qtyin'])) {
$row['qtyin'] = 0;
}
if (is_null($row['qtyout'])) {
$row['qtyout'] = 0;
}
if (is_null($row['rate'])) {
$row['rate'] = 0;
}
if ($row['vtype'] = 'PI' && $row['qtyin'] > 0) {
$stkval = ($bal * $avgrate) + ($row['qtyin'] * $row['rate']);
if ($bal > 0) {
$bal = $bal + $row['qtyin'] - $row['qtyout'];
if ($bal > 0 && $stkval > 0) {
$avgrate = $stkval / $bal;
}
} else {
$bal = $bal + $row['qtyin'] - $row['qtyout'];
$avgrate = $row['rate'];
}
} else {
$bal = $bal + $row['qtyin'] - $row['qtyout'];
}
$row['balqty'] = $bal;
$row['avgrate'] = $avgrate;
}
My question is how to update $query with changes made to $row. I am new to php and laravel and have tried push(), put(), etc. Don't know which function is required in this case.

Answer 1

To keep changes you've applied to $row inside the foreach you just need to pass it by reference:
foreach ($query as &$row) { //notice the & before $row
Alternatively, you could could use just move the code inside your foreach to inside your map closure:
->map(function ($item, $key) use ($bal, $avgrate) {
$row = (array)$item;
if (is_null($row['qtyin'])) {
$row['qtyin'] = 0;
}
if (is_null($row['qtyout'])) {
$row['qtyout'] = 0;
}
if (is_null($row['rate'])) {
$row['rate'] = 0;
}
if ($row['vtype'] = 'PI' && $row['qtyin'] > 0) {
$stkval = ($bal * $avgrate) + ($row['qtyin'] * $row['rate']);
if ($bal > 0) {
$bal = $bal + $row['qtyin'] - $row['qtyout'];
if ($bal > 0 && $stkval > 0) {
$avgrate = $stkval / $bal;
}
} else {
$bal = $bal + $row['qtyin'] - $row['qtyout'];
$avgrate = $row['rate'];
}
} else {
$bal = $bal + $row['qtyin'] - $row['qtyout'];
}
$row['balqty'] = $bal;
$row['avgrate'] = $avgrate;
return $row;
})

Answer 2

Try following code:
$query = DB::table('autostk')
->where('autostk.branchid', $branch_id)
->where('autostk.itemcode', $request->itemcode)
->whereDate('autostk.date', '<=', $request->tdate)
->where('autostk.branchid', $branch_id)
->leftjoin('journal', 'autostk.refno', '=', 'journal.vno')
->where('journal.code', '>=', 100)
->where('journal.branchid', $branch_id)
->leftjoin('accounts', 'journal.code', '=', 'accounts.code')
->where('accounts.branchid', $branch_id)
->select('journal.code', 'accounts.title', 'autostk.*')
->orderBY('date')->get()
->map(function ($item, $key) {
return (array)$item;
})
->all();
$row_data = [];
foreach ($query as $row) {
if (is_null($row['qtyin'])) {
$row['qtyin'] = 0;
}
if (is_null($row['qtyout'])) {
$row['qtyout'] = 0;
}
if (is_null($row['rate'])) {
$row['rate'] = 0;
}
if ($row['vtype'] = 'PI' && $row['qtyin'] > 0) {
$stkval = ($bal * $avgrate) + ($row['qtyin'] * $row['rate']);
if ($bal > 0) {
$bal = $bal + $row['qtyin'] - $row['qtyout'];
if ($bal > 0 && $stkval > 0) {
$avgrate = $stkval / $bal;
}
} else {
$bal = $bal + $row['qtyin'] - $row['qtyout'];
$avgrate = $row['rate'];
}
} else {
$bal = $bal + $row['qtyin'] - $row['qtyout'];
}
$row['balqty'] = $bal;
$row['avgrate'] = $avgrate;
$row_data[] = $row;
}
Now use $row_data.

Answer 3

Option 1
//use toArray() in last to get the result as an array
$query = ...->all()->toArray();
foreach ($query as $key => $row) {
//inside here instead of using $row, use $query[$key]
//so for example $row['rate'] = 0; becomes:
$query[$key]['rate'] = 0;
}
Option 2
//use toArray() in last to get the result as an array
$query = ...->all()->toArray();
//use pass by reference with help of &
foreach ($query as $key => &$row) {
...
}
However, be very careful with a pass by reference approach otherwise you might run into issues if you reuse the same array.
Option 3
$query = ...->all();
foreach ($query as $key => $row) {
//access it as object
//instead of using $row['qtyin'] use:
$row->qtyin = 0;
}
Its dealer's choice :)