在数组中显示min（）值

Question

I want to display 10 highest figure and 10 lowest figure in a multi-dimensional array.
I have figured out way to display the maximum figure using max(), but when I use min(), the least less value get looped again and again for 10 times e.g 2.

How can I reuse my code to display minimum value in my array?

  $totalCustomer = count($customerArray);
$postion = 0;
foreach ($customerArray as $custom) {
    $postion = $postion + 1;
    if($totalCustomer - $postion < 9){
        $top[] = $custom['spend'];
        $maxprice = max($top);

        echo "Max spend price is ". $maxprice. "<br>";
    }                              
}                

Answer 1

I would use usort:

/* Sort the array the value of 'spend' */
usort($customerArray, function($a, $b) {
    if($a['spend'] == $b['spend']) {
        return 0;
    } else if ($a['spend'] > $b['spend']) {
        return -1;
    } else {
        return 1;
    }
});

/* The top 10 elements are now on top of the array */    
$top = array_slice($customerArray, 0, 10);

/* If we reverse the array using array_reverse() the 
   smallest items are on top */
$low = array_slice(array_reverse($customerArray), 0, 10);