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47 lines
1.3 KiB
47 lines
1.3 KiB
2 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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$category = 'Engineering';
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$functionName = 'DELTA';
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$description = 'Tests whether two values are equal. Returns 1 if number1 = number2; returns 0 otherwise. This function is also known as the Kronecker Delta function';
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$helper->titles($category, $functionName, $description);
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// Create new PhpSpreadsheet object
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$spreadsheet = new Spreadsheet();
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$worksheet = $spreadsheet->getActiveSheet();
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// Add some data
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$testData = [
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[4, 5],
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[3, 3],
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[0.5, 0],
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];
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$testDataCount = count($testData);
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$worksheet->fromArray($testData, null, 'A1', true);
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for ($row = 1; $row <= $testDataCount; ++$row) {
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$worksheet->setCellValue('C' . $row, '=DELTA(A' . $row . ',B' . $row . ')');
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}
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$comparison = [
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0 => 'The values are not equal',
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1 => 'The values are equal',
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];
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// Test the formulae
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for ($row = 1; $row <= $testDataCount; ++$row) {
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$helper->log(sprintf(
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'(E%d): Compare values %d and %d - Result is %d - %s',
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$row,
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$worksheet->getCell('A' . $row)->getValue(),
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$worksheet->getCell('B' . $row)->getValue(),
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$worksheet->getCell('C' . $row)->getCalculatedValue(),
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$comparison[$worksheet->getCell('C' . $row)->getCalculatedValue()]
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));
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}
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