<?php

class Apple{
    private $a = 0;
    public function bench() {
        file_exists("ghjk.txt");
        file_exists("index.php");
    }
}

$time = microtime(1);
for($i=0;$i<100;$i++) {
    $a = new Apple;
    $a->bench();
}
echo microtime(1) - $time;