<?php
echo "<bodystyle='background:url(https://67.media.tumblr.com/63374d7d328956719d92fd0ef8103b5c/tumblr_n8opg8pMkR1t19jpho1_500.gif);'>";
function fahrenheit_to_celsius($given_value)
{
$celsius=5/9*($given_value-32);
return $celsius ;
}
function celsius_to_fahrenheit($given_value)
{
$fahrenheit=$given_value*9/5+32;
return $fahrenheit ;
$celsius = ($fahrenheit - 32) / 1.8;
}
?>
<html><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<link rel="stylesheet" type="text/css" href="tc.css">
<head>
<c><title>F-C-F Temp.Converter</c></title>
</head>
<body>
<form action="" method="post">
<table>
<h1 align=center>Online Temperature Converter</h1>
<hr>
<td colspan="15"><img src="snow-cold-thermometer.jpg" width="400" height="500"/></td>
<tr>
<td>
<select name="first_temp_type_name">
<option value="fahrenheit">Fahrenheit (F)</option>
<option value="celsius">Celsius (C)</option>
</select>
</td>
</tr>
<tr>
<td>
<input type="text" name="given_value">
</td>
</tr>
<tr>
<td>
<select name="second_temp_type_name">
<option value="celcius">Celcius (C)</option>
<option value="fahrenheit">Fahrenheit (F)</option>
</select>
</td>
</tr>
<tr>
<td>
<input type="submit" name="btn" value="Convert">
</td>
</tr>
<tr>
<td>
<?php
if(isset($_POST['btn']))
{
$first_temp_type_name=$_POST['first_temp_type_name'];
$second_temp_type_name=$_POST['second_temp_type_name'];
$given_value=$_POST['given_value'];
if($first_temp_type_name=='fahrenheit')
{
$celsius=fahrenheit_to_celsius($given_value);
echo "$given_value F = $celsius C";
}
if($first_temp_type_name=='celsius')
{
$fahrenheit=celsius_to_fahrenheit($given_value);
echo "$given_value C= $fahrenheit F";
}
}
?>
</td>
</tr>
</table>
</form>
</body>
</html>
*the CSS coding
c {
font: "Invasion2000", serif;
font-size: 22pt;
color: #FF0000;
font-family: "Invasion2000";
font-style: italic;
text-shadow: #000000;
}
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