Online PHP editor | rfc for V0qRW

@ 2014-07-09T04:41:22Z

<?php
 $n     = (int)$_POST['n'];
$r     = (int)$_POST['r'];
$model = $_POST['model'];

function factorial($n)
{
 if($n == 0 or $n == 1)
 {
  return 1;
 }
 else
 {
  return($n * factorial($n-1));
 }
}
 // fungsi permutasi perulangan
function permutasi_perulangan($n, $r)
{
 return(pow($n, $r));
}
 // fungsi permutasi tak berulang
function permutasi_tak_berulang($n, $r)
{
 return(factorial($n)/factorial($n-$r));
}
?>
 <html>
<head>
<title>Fungsi Permutasi dengan PHP</title>
</head>
<body>
<center>
<form method="post">
<table cellpadding=5 cellspacing=2 border=1>
 <tr>
  <td>Permutasi</td>
  <td>
   <select name="model">
    <option value="ulang">Permutasi Perulangan</option>
    <option value="tidak">Permutasi Tak Berulang</option>
   </select>
  </td>
 </tr>
 <tr>
  <td>N</td>
  <td><input type=text name="n" size=5 value=<? echo $n; ?> /></td>
 </tr>
 <tr>
  <td>M</td>
  <td><input type=text name="r" size=5 value=<? echo $r; ?> /></td>
 </tr>
 <tr>
  <td colspan=2 align=center><input type="submit" value="Permutasi" /></td>
 </tr>
</table>
</form>
 <?php
 if(isset($n) && isset($r) && isset($model) && $n != 0 && $r != 0)
{
 if($model == "ulang")
 {
  echo "<h2>$n<sup>$r</sup> = ";
  echo permutasi_perulangan($n, $r);
  echo "</h2>";
 }
 else
 {
  echo "<table border=0 cellpadding=0 cellspacing=0>";
  echo "<tr><td align=center style=\"border-bottom: solid #000;\"><font size=6>$n!</font></td>";
  echo "<td rowspan=2 valign=middle><font size=6>&nbsp; = ". permutasi_tak_berulang($n ,$r) ."</font>";
  echo "</tr>";
  echo "<tr><td align=center><font size=6>$r !($n - $r)!</font></td></tr></table>";
 }
}
 ?>
</center>
</body>
</html>

Output for git.master, git.master_jit, rfc.property-hooks: Warning: Undefined array key "n" in /in/V0qRW on line 2 Warning: Undefined array key "r" in /in/V0qRW on line 3 Warning: Undefined array key "model" in /in/V0qRW on line 4 <html> <head> <title>Fungsi Permutasi dengan PHP</title> </head> <body> <center> <form method="post"> <table cellpadding=5 cellspacing=2 border=1> <tr> <td>Permutasi</td> <td> <select name="model"> <option value="ulang">Permutasi Perulangan</option> <option value="tidak">Permutasi Tak Berulang</option> </select> </td> </tr> <tr> <td>N</td> <td><input type=text name="n" size=5 value=<? echo $n; ?> /></td> </tr> <tr> <td>M</td> <td><input type=text name="r" size=5 value=<? echo $r; ?> /></td> </tr> <tr> <td colspan=2 align=center><input type="submit" value="Permutasi" /></td> </tr> </table> </form> </center> </body> </html>

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