Calculate average and median of array values

average-median-array.php

<?php

/**
* Calculate average of array values
* @param array $array
* @return int $average
*/

function array_average ($arr) 
{

	$total = (int) 0;
	$count = (int) @count($arr);

	foreach ($arr as $value)
		$total = $total + $value;

	return ($total / $count);

}

/**
* Calculate median of array values
* @param array $arr
* @return int $median
*/

function array_median ($arr) 
{

	$count = @count($arr);
	$middleval = floor(($count-1)/2);

	if ($count % 2):

		return $arr[$middleval];

	else:

		$low = $arr[$middleval];
		$high = $arr[$middleval+1];

		return (($low+$high) / 2);

	endif;
	
}