Average of Three Numbers in PHP

 I wrote this program to compute the average value of three numbers using PHP programming language.

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Program Listing

<?php

/* average_three.php

   Jake Rodriguez Pomperada, MAED-IT, MIT

   www.jakerpomperada.com / www.jakerpomperada.blogspot.com

   jakerpomperada@gmail.com

   Bacolod City, Negros Occidental, Philippines

*/

$val1 = 20;

$val2 = 30;

$val3 = 40;

$num_of_values = 3;

$total_sum = ($val1 + $val2 + $val3);

$average= ($total_sum / $num_of_values);

echo "<h2>Average of Three Numbers in PHP </h2>";

echo "<h2>The given values are $val1, $val2, and $val3.</h2>";

echo "<h2>The average value is $average.</h2>";

?>