<?php
$numbers = array_fill(0, 1000000, 0);

$mtime = microtime();
$mtime = explode(" ",$mtime);
$mtime = $mtime[1] + $mtime[0];
$starttime = $mtime;

$to = count($numbers);
for ($i = 0; $i < $to; $i++)
        $a = 1;


$mtime = microtime();
$mtime = explode(" ",$mtime);
$mtime = $mtime[1] + $mtime[0];
$endtime = $mtime;
$totaltime = ($endtime - $starttime);
echo(count($numbers)."\n");
echo "This page was created in ".$totaltime." seconds";

1000000
This page was created in 0.46062707901001 seconds