Given the temperature in degrees Fahrenheit, compute the equivalent centigrade value.
<?
// generate a random number, this will be the temperature in degrees fahrenheit
$fahrenheit = mt_rand(1, 100);
// this is the way to convert fahrenheit to centigrade
$centigrade = ($fahrenheit - 32) / 1.8;
// show the randomly generated fahrenheit and the centigrade equivalent
echo $fahrenheit . ' degrees Fahrenheit is ' . round($centigrade, 2) . ' degrees Centigrade';
?>Which produces:
85 degrees Fahrenheit is 29.44 degrees Centigrade