PHP - Performance Benchmark (Skeleton to compare two algorithms)

perf.php

<?php

function test1() {
}

function test2() {
}

function init() {
}

function destroy() {
}

function run($code, $max) {
    $start = microtime(true);

    for ($i = 0; $i < $max; $i++) {
        $code();
    }

    $end = microtime(true);

    return ($end - $start);
}
 
function benchmark($code, $times) {
    init();
    
    $executionTime = array();
    for ($i = 0; $i < 5; $i++) {
        $executionTime[] = run($code, $times);
    }
    sort($executionTime);
    unset($executionTime[0]); // Remove the best
    unset($executionTime[4]); // Remove the worst
    $executionTime = array_sum($executionTime) / 3;

    destroy();

    return $executionTime;
}

$times = intval($_SERVER['argv'][1]);

$executionTime = benchmark('test1', $times);
echo "To run the code #1 $times times it took $executionTime seconds\n";

$executionTime = benchmark('test2', $times);
echo "To run the code #2 $times times it took $executionTime seconds\n";