Array speed tests

gistfile1.php

<?php

$a = array();
for ($i = 0; $i < 1000; $i++) {
    $a[] = rand(0,1000000);
}

printf("Start, first mine:\n");
$t1 = microtime(true);
var_dump(mine($a));
$t2 = microtime(true);

printf("\nDone in %f.\n\nNow Emil's:\n", $t2 - $t1);

$t1 = microtime(true);
var_dump(emils($a));
$t2 = microtime(true);

printf("\nDone in %f\n", $t2 - $t1);


function mine ($a) {
    asort($a);
    return array_slice($a, -4);
}


function emils ($array) {
    $a = $b = $c = $d = null;
    foreach($array as $v) {
        if(!isset($a) || $v > $a) {
            $d = $c;
            $c = $b;
            $b = $a;
            $a = $v;
        }elseif(!isset($b) || $v > $b) {
            $d = $c;
            $c = $b;
            $b = $v;
        }elseif(!isset($c) || $v > $c) {
            $d = $c;
            $c = $v;
        }elseif(!isset($d) || $v > $d) {
            $d = $v;
        }
    }
    // return array_slice($array, -4); This old version was wrong!!
    return array($a, $b, $c, $d);
}