Laravel Maatwebsite Excel - All zero values being populated by map() function using fromArray() concern - maatwebsite-excel

Question

I am trying to make an excel export using Maatwebsite Excel. This is my second export file and first one is working perfect. When I var_dump() data is okay using postman but the rendered excel has all cells populated with 0s.
class SummaryExport implements FromArray, WithMapping, WithEvents, WithHeadings, WithStyles, WithCustomStartCell, WithStrictNullComparison, ShouldAutoSize
{
use RegistersEventListeners;
private $from_date, $to_date, $fee_type;
public function __construct($from_date, $to_date, $fee_type)
{
$this->from_date = $from_date;
$this->to_date = $to_date;
$this->fee_type = $fee_type;
}
/**
* #return array
*/
public function array(): array
{
$school_id = auth()->user()->school_id;
if($this->fee_type == "all"){
$fee_vouchers = FeeVoucher::where('school_id', $school_id)->where('issue_date','>=',$this->from_date)
->where('issue_date','<=',$this->to_date)->get();
}else{
$fee_vouchers = FeeVoucher::where('school_id', $school_id)->where('issue_date','>=',$this->from_date)
->where('issue_date','<=',$this->to_date)
->where('type', $this->fee_type)->get();
}
$gross = 0;
$concession = 0;
$fines=0;
$net=0;
$received=0;
$percentage=0;
$balance = 0;
$fee_summary = array();
foreach($fee_vouchers as $vchr){
$gross = $gross + $vchr->total_amount + $vchr->fines->sum('amount');
$concession = $concession + $vchr->concessions->sum('applied');
$fines = $fines + $vchr->fines->sum('amount');
if($vchr->is_paid == 1){
$received = $received + $vchr->total_amount + $vchr->fines->sum('amount');
}
}
$net = $gross - $concession;
$balance = $net - $received;
$fee_summary[]= array(
'gross' => intval($gross),
'concession' =>intval($concession),
'fines' => intval($fines),
'net' => intval($net),
'received' => intval($received),
'percentage' => intval($percentage),
'balance' => intval($balance)
);
//var_dump($fee_summary); //values are displayed correct here as well
return $fee_summary;
}
public function map($row): array
{
// When I do var_dump($row) here in post man I can see data but in Excel data is not written but all zeros
return [
$row['gross'],
$row['concession'],
$row['fines'],
$row['net'],
$row['received'],
$row['percentage'],
$row['balance']
//[15023,456,785,4567,865,952,0] // when I give static values the problem is fixed and all values are written in Excel
];
}
}
The weird thing is when I give the fixed static values it gives me proper results. On using var_dump it also shows that data is accurately created. But I am stuck from last night what is causing this problem.

Answer 1

I know this is quite old now, but the intval method will return zero on an unprocessable/incorrect value. As mentioned in the docs here, The integer value of value on success, or 0 on failure. Empty arrays return 0, non-empty arrays return 1.
echo intval(true) // 1
echo intval(false) // 0
echo intval("'12'") // 0, within the quotes the value is a string still
echo intval("12") // 12
echo intval(5.25) // 5
echo intval('$400') // 0
Without seeing the input data I assume that the values being passed into the intval method on return, aren't valid types. Are there symbols (i.e. $, other currency symbols) within the values?