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37 lines
1.2 KiB
37 lines
1.2 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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$helper->log('Returns the interest paid during a specific period of a loan or investment.');
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// Create new PhpSpreadsheet object
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$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', 0.05],
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['Number of Years', 5],
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['Present Value', 50000.00],
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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 = 6;
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for ($month = 1; $month <= 12; ++$month) {
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$row = (string) ($baseRow + $month);
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$worksheet->setCellValue("A{$row}", "Payment for Mth {$month}");
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$worksheet->setCellValue("B{$row}", "=ISPMT(\$B\$1/12, {$month}, \$B\$2*12, \$B\$3)");
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$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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$helper->log("ISPMT() Month {$month} Result is " . $worksheet->getCell("B{$row}")->getFormattedValue());
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}
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