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https://github.com/PHPOffice/PhpSpreadsheet.git
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oleibman
641f86dc80
A continuation of PR #3859. Change code that would be flagged if we were to run Phpstan at level 9 (we currently run level 8). I may or may not follow up with source code (454 level-9 problems remain for src), but there is no reason to avoid the effort for samples. No changes are made to src.
72 lines
2.6 KiB
PHP
72 lines
2.6 KiB
PHP
<?php
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use PhpOffice\PhpSpreadsheet\Calculation\Calculation;
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use PhpOffice\PhpSpreadsheet\Helper\Sample;
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use PhpOffice\PhpSpreadsheet\Settings;
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require __DIR__ . '/../Header.php';
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$helper = new Sample();
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if ($helper->isCli()) {
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$helper->log('This example should only be run from a Web Browser' . PHP_EOL);
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return;
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}
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?>
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<form action="45_Quadratic_equation_solver.php" method="POST">
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Enter the coefficients for the Ax<sup>2</sup> + Bx + C = 0
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<table border="0" cellpadding="0" cellspacing="0">
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<tr>
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<td>
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<b>A </b>
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</td>
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<td>
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<input name="A" type="text" size="8" value="<?php echo (isset($_POST['A'])) ? htmlentities($_POST['A'], Settings::htmlEntityFlags()) : ''; ?>">
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</td>
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</tr>
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<tr>
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<td>
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<b>B </b>
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</td>
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<td>
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<input name="B" type="text" size="8" value="<?php echo (isset($_POST['B'])) ? htmlentities($_POST['B'], Settings::htmlEntityFlags()) : ''; ?>">
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</td>
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</tr>
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<tr>
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<td><b>C </b>
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</td>
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<td>
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<input name="C" type="text" size="8" value="<?php echo (isset($_POST['C'])) ? htmlentities($_POST['C'], Settings::htmlEntityFlags()) : ''; ?>">
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</td>
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</tr>
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</table>
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<input name="submit" type="submit" value="calculate"><br />
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If A=0, the equation is not quadratic.
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</form>
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<?php
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/** If the user has submitted the form, then we need to execute a calculation * */
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if (isset($_POST['submit'])) {
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if ($_POST['A'] == 0) {
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$helper->log('The equation is not quadratic');
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} else {
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// Calculate and Display the results
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$helper->log('<hr /><b>Roots:</b><br />');
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$discriminantFormula = '=POWER(' . $_POST['B'] . ',2) - (4 * ' . $_POST['A'] . ' * ' . $_POST['C'] . ')';
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$discriminant = Calculation::getInstance()->calculateFormula($discriminantFormula);
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$r1Formula = '=IMDIV(IMSUM(-' . $_POST['B'] . ',IMSQRT(' . $discriminant . ')),2 * ' . $_POST['A'] . ')';
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$r2Formula = '=IF(' . $discriminant . '=0,"Only one root",IMDIV(IMSUB(-' . $_POST['B'] . ',IMSQRT(' . $discriminant . ')),2 * ' . $_POST['A'] . '))';
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/** @var string */
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$output = Calculation::getInstance()->calculateFormula($r1Formula);
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$helper->log("$output");
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/** @var string */
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$output = Calculation::getInstance()->calculateFormula($r2Formula);
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$helper->log("$output");
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$callEndTime = microtime(true);
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$helper->logEndingNotes();
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}
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}
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