<?php

function timeit(callable $func, array $args, int $times = 50000)
{
    if ($times < 1) {
        throw new InvalidArgumentException('times must be greater than 1');
    }
    
    $total = 0;
    
    for ($i = 0; $i < $times; $i++) {
        $initial = microtime(true);

        try {
            $func(...$args);
        } catch (Exception $e) {
            // nothing to do here.
        }
        
        $total += microtime(true) - $initial;
    }

    $per_call = $total/$times;
    echo "$times calls took $total seconds ($per_call seconds per call)\n";
}

timeit('explode', [',', 'cat,dog,horse']);