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Title : Temperature Conversion
Categories : PHP, Math., Beginner Guides Click here to Update Your Picture
Murray Moffatt
Date : Aug 02nd 2005
Grade : 2 of 5 (graded 2 times)
Viewed : 16008
File : 4209.php
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<?php
/*
Title: Temperature Conversion

Description: Convert celsius to fahrenheit and
fahrenheit to celsius.

Author: Murray Moffatt for A Web 4 U Designs

History:
2005-03-15 : Initial coding.
*/

function temp2celsius ($fahrenheit, $precision = 0) {
// Convert the supplied temperature in celsius to
// fahrenheit and return the value. Specify the required
// precision to round the converted value to.
// Returns FALSE on error.

if (!isset($fahrenheit)) return FALSE;
$precision = (integer)$precision;
$celsius = (float)(($fahrenheit - 32) / 1.8 );
return round($celsius, $precision);
}

function temp2fahrenheit ($celsius, $precision = 0) {
// Convert the supplied temperature in fahrenheit to
// celsius and return the value. Specify the required
// precision to round the converted value to.
// Returns FALSE on error.

if (!isset($celsius)) return FALSE;
$precision = (integer)$precision;
$fahrenheit = (float)(1.8 * $celsius) + 32;
return round($fahrenheit, $precision);
}

echo "<p>50F is " . temp2celsius(50) . "C</p>";
echo "<p>50C is " . temp2fahrenheit(50) . "F</p>";
?>



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