ILIAS  release_5-2 Revision v5.2.25-18-g3f80b828510
Quadratic2.php
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1 <html>
2 <head>
3 <title>Quadratic Equation Solver</title>
4 </head>
5 <body>
6 <?php
7 
9 error_reporting(E_ALL);
10 
12 set_include_path(get_include_path() . PATH_SEPARATOR . dirname(__FILE__) . '/../Classes/');
13 
14 ?>
15 <h1>Quadratic Equation Solver</h1>
16 <form action="Quadratic2.php" method="POST">
17 Enter the coefficients for the Ax<sup>2</sup> + Bx + C = 0
18 <table border="0" cellpadding="0" cellspacing="0">
19  <tr><td><b>A&nbsp;</b></td>
20  <td><input name="A" type="text" size="8" value="<?php echo (isset($_POST['A'])) ? htmlentities($_POST['A']) : ''; ?>"></td>
21  </tr>
22  <tr><td><b>B&nbsp;</b></td>
23  <td><input name="B" type="text" size="8" value="<?php echo (isset($_POST['B'])) ? htmlentities($_POST['B']) : ''; ?>"></td>
24  </tr>
25  <tr><td><b>C&nbsp;</b></td>
26  <td><input name="C" type="text" size="8" value="<?php echo (isset($_POST['C'])) ? htmlentities($_POST['C']) : ''; ?>"></td>
27  </tr>
28 </table>
29 <input name="submit" type="submit" value="calculate"><br />
30 If A=0, the equation is not quadratic.
31 </form>
32 
33 <?php
35 if (isset($_POST['submit'])) {
36  if ($_POST['A'] == 0) {
37  echo 'The equation is not quadratic';
38  } else {
40  include 'PHPExcel/Calculation.php';
41 
43  echo '<hr /><b>Roots:</b><br />';
44 
45  $callStartTime = microtime(true);
46  $discriminantFormula = '=POWER('.$_POST['B'].',2) - (4 * '.$_POST['A'].' * '.$_POST['C'].')';
47  $discriminant = PHPExcel_Calculation::getInstance()->calculateFormula($discriminantFormula);
48 
49  $r1Formula = '=IMDIV(IMSUM(-'.$_POST['B'].',IMSQRT('.$discriminant.')),2 * '.$_POST['A'].')';
50  $r2Formula = '=IF('.$discriminant.'=0,"Only one root",IMDIV(IMSUB(-'.$_POST['B'].',IMSQRT('.$discriminant.')),2 * '.$_POST['A'].'))';
51 
52  echo PHPExcel_Calculation::getInstance()->calculateFormula($r1Formula).'<br />';
53  echo PHPExcel_Calculation::getInstance()->calculateFormula($r2Formula).'<br />';
54  $callEndTime = microtime(true);
55  $callTime = $callEndTime - $callStartTime;
56 
57  echo '<hr />Call time for Quadratic Equation Solution was '.sprintf('%.4f',$callTime).' seconds<br /><hr />';
58  echo ' Peak memory usage: '.(memory_get_peak_usage(true) / 1024 / 1024).' MB<br />';
59  }
60 }
61 
62 ?>
63 
64 </body>
65 <html>
nbsp
< span style="color:black;"> TC</span >< span style="color:white;"> PDF</span > & nbsp
Definition: example_001.php:88
size
font size
Definition: langcheck.php:162
input
input
Definition: langcheck.php:166
$callStartTime
$callStartTime
Definition: 01pharSimple.php:79
PHPExcel_Calculation\getInstance
static getInstance(PHPExcel $workbook=NULL)
Get an instance of this class.
Definition: Calculation.php:1765
$callTime
$callTime
Definition: 01pharSimple.php:84
$_POST
$_POST["username"]
Definition: cfg.phpunit.template.php:11
$callEndTime
$callEndTime
Definition: 01pharSimple.php:83