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The function mmmr (Mean, Median, Mode, Range) will calculate the Mean, Median, Mode, or Range of an array.
The function automatically defaults to Mean (average).
int mmmr( array $array [, str $output] )
<?php
function mmmr($array, $output = 'mean'){
if(!is_array($array)){
return FALSE;
}else{
switch($output){
case 'mean':
$count = count($array);
$sum = array_sum($array);
$total = $sum / $count;
break;
case 'median':
rsort($array);
$middle = round(count($array) / 2);
$total = $array[$middle-1];
break;
case 'mode':
$v = array_count_values($array);
arsort($v);
foreach($v as $k => $v){$total = $k; break;}
break;
case 'range':
sort($array);
$sml = $array[0];
rsort($array);
$lrg = $array[0];
$total = $lrg - $sml;
break;
}
return $total;
}
}
$arr = array(12,33,23,4,20,124,4,2);
// Mean = The average of all the numbers
echo 'Mean: '.mmmr($arr).'<br>';
echo 'Mean: '.mmmr($arr, 'mean').'<br>';
// Median = The middle value after the numbers are sorted smallest to largest
echo 'Median: '.mmmr($arr, 'median').'<br>';
// Mode = The number that is in the array the most times
echo 'Mode: '.mmmr($arr, 'mode').'<br>';
// Range = The difference between the highest number and the lowest number
echo 'Range: '.mmmr($arr, 'range');
?>
Suggested Difficulty Level: Beginner
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