mirror of
https://github.com/retailcrm/PHPExcel.git
synced 2024-11-23 05:46:06 +03:00
66 lines
2.3 KiB
PHP
66 lines
2.3 KiB
PHP
|
<html>
|
||
|
|
<head>
|
||
|
|
<title>Quadratic Equation Solver</title>
|
||
|
|
</head>
|
||
|
|
<body>
|
||
|
|
<?php
|
||
|
|
|
||
|
|
/** Error reporting **/
|
||
|
|
error_reporting(E_ALL);
|
||
|
|
|
||
|
|
/** Include path **/
|
||
|
|
set_include_path(get_include_path() . PATH_SEPARATOR . '../Classes/');
|
||
|
|
|
||
|
|
?>
|
||
|
|
<h1>Quadratic Equation Solver</h1>
|
||
|
|
<form action="Quadratic2.php" method="POST">
|
||
|
|
Enter the coefficients for the Ax<sup>2</sup> + Bx + C = 0
|
||
|
|
<table border="0" cellpadding="0" cellspacing="0">
|
||
|
|
<tr><td><b>A </b></td>
|
||
|
|
<td><input name="A" type="text" size="8" value="<?php echo (isset($_POST['A'])) ? htmlentities($_POST['A']) : ''; ?>"></td>
|
||
|
|
</tr>
|
||
|
|
<tr><td><b>B </b></td>
|
||
|
|
<td><input name="B" type="text" size="8" value="<?php echo (isset($_POST['B'])) ? htmlentities($_POST['B']) : ''; ?>"></td>
|
||
|
|
</tr>
|
||
|
|
<tr><td><b>C </b></td>
|
||
|
|
<td><input name="C" type="text" size="8" value="<?php echo (isset($_POST['C'])) ? htmlentities($_POST['C']) : ''; ?>"></td>
|
||
|
|
</tr>
|
||
|
|
</table>
|
||
|
|
<input name="submit" type="submit" value="calculate"><br />
|
||
|
|
If A=0, the equation is not quadratic.
|
||
|
|
</form>
|
||
|
|
|
||
|
|
<?php
|
||
|
|
/** If the user has submitted the form, then we need to execute a calculation **/
|
||
|
|
if (isset($_POST['submit'])) {
|
||
|
|
if ($_POST['A'] == 0) {
|
||
|
|
echo 'The equation is not quadratic';
|
||
|
|
} else {
|
||
|
|
/** So we include PHPExcel to perform the calculations **/
|
||
|
|
include 'PHPExcel/Calculation.php';
|
||
|
|
|
||
|
|
/** Calculate and Display the results **/
|
||
|
|
echo '<hr /><b>Roots:</b><br />';
|
||
|
|
|
||
|
|
$callStartTime = microtime(true);
|
||
|
|
$discriminantFormula = '=POWER('.$_POST['B'].',2) - (4 * '.$_POST['A'].' * '.$_POST['C'].')';
|
||
|
|
$discriminant = PHPExcel_Calculation::getInstance()->calculateFormula($discriminantFormula);
|
||
|
|
|
||
|
|
$r1Formula = '=IMDIV(IMSUM(-'.$_POST['B'].',IMSQRT('.$discriminant.')),2 * '.$_POST['A'].')';
|
||
|
|
$r2Formula = '=IF('.$discriminant.'=0,"Only one root",IMDIV(IMSUB(-'.$_POST['B'].',IMSQRT('.$discriminant.')),2 * '.$_POST['A'].'))';
|
||
|
|
|
||
|
|
echo PHPExcel_Calculation::getInstance()->calculateFormula($r1Formula).'<br />';
|
||
|
|
echo PHPExcel_Calculation::getInstance()->calculateFormula($r2Formula).'<br />';
|
||
|
|
$callEndTime = microtime(true);
|
||
|
|
$callTime = $callEndTime - $callStartTime;
|
||
|
|
|
||
|
|
echo '<hr />Call time for Quadratic Equation Solution was '.sprintf('%.4f',$callTime).' seconds<br /><hr />';
|
||
|
|
echo ' Peak memory usage: '.(memory_get_peak_usage(true) / 1024 / 1024).' MB<br />';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
?>
|
||
|
|
|
||
|
|
</body>
|
||
|
|
<html>
|