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| Code | |||||
<?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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