Clock Hand Angle Challenge

clockangle.php

<?php
$hourAngleRate = 360 / 12;
$minuteAngleRate = 360 / 60;

function timeAngle($hour, $min)
{
    global $hourAngleRate, $minuteAngleRate;
    
    if ($hour > 12 || $min > 60) return false;
    
    $hourDegree = $hourAngleRate * $hour;
    $minDegree = $minuteAngleRate * $min;
    
    return abs($hourDegree - $minDegree);
}

echo '<pre>';
echo timeAngle(12, 30) . "\n";
echo timeAngle(1, 18) . "\n";
echo timeAngle(9, 43) . "\n";
echo '</pre>';
?>