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39 lines
1.3 KiB
39 lines
1.3 KiB
4 months ago
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<?php
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use PhpOffice\PhpSpreadsheet\Spreadsheet;
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require __DIR__ . '/../../Header.php';
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$helper->log('Returns the cumulative interest paid on a loan or investment, between two specified periods.');
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// Create new PhpSpreadsheet object
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$spreadsheet = new Spreadsheet();
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$worksheet = $spreadsheet->getActiveSheet();
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// Add some data
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$arguments = [
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['Interest Rate (per period)', 0.05 / 12],
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['Number of Periods', 5 * 12],
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['Present Value', 50000],
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];
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// Some basic formatting for the data
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$worksheet->fromArray($arguments, null, 'A1');
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$worksheet->getStyle('B1')->getNumberFormat()->setFormatCode('0.00%');
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$worksheet->getStyle('B3')->getNumberFormat()->setFormatCode('$#,##0.00');
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// Now the formula
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$baseRow = 5;
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for ($year = 1; $year <= 5; ++$year) {
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$row = (string) ($baseRow + $year);
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$yearStartPeriod = (int) $year * 12 - 11;
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$yearEndPeriod = (int) $year * 12;
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$worksheet->setCellValue("A{$row}", "Yr {$year}");
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$worksheet->setCellValue("B{$row}", "=CUMIPMT(\$B\$1, \$B\$2, \$B\$3, {$yearStartPeriod}, {$yearEndPeriod}, 0)");
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$worksheet->getStyle("B{$row}")->getNumberFormat()->setFormatCode('$#,##0.00;-$#,##0.00');
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$helper->log($worksheet->getCell("B{$row}")->getValue());
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$helper->log("CUMIPMT() Year {$year} Result is " . $worksheet->getCell("B{$row}")->getFormattedValue());
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}
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