Paste code

<html>
<head>
  <style>
  .hesapsonuc{
    border: 2px solid;
  }
  </style>
<title>Hesaplama</title>
<?php
$code = $_GET["code"];
$shape = $_GET["shape"];
$width = $_GET["width"];
$height = $_GET["height"];
$hesaplama = $_GET["hesaplama"];
$bold = $_GET["bold"];
$italic = $_GET["italic"];
$fontSize = $_GET["fontSize"];
$dizi = array($width,$height);
if ($shape=="Square") {
  $dizi[1] = $dizi[0];
}
function calcArea($width,$height)
{
  return $width * $height;
}
function calcCirc($width,$height)
{
  return $width * 2 + $height * 2;
}

 ?>
</head>
<body>
<div class="hesapsonuc" style="width:300px">
  <h3>Hesaplama Sonucu</h3>
<?php
if (preg_match("/[A-F0-9]{2}/",$code)) {
  print("<p style='");
  if ($italic=="italic") {
    print("font-style:italic");
  }
  if ($bold=="bold") {
    print("font-weight:bold");
  }
  print("font-size:" . $fontSize . "px;");
  print("'>");
  if ($hesaplama=="area")
  {
    print("Area of " . $shape . " = " . calcArea($dizi[0],$dizi[1]));
  }
  else
  {
    print("Circle of " . $shape . " = " . calcCirc($dizi[0],$dizi[1]));
  }
  print("</p>");
}
else
{
  print("<p style='");
  print("color:red");
  print("'>");
  print("Please Enter İnvalid Code");
  print("</p>");

}
?>

</div>

</body>
</html>