Basic PHP benchmarking template

benchmark.php

<?php

$n = 1000000;

$start_time = microtime(true);
$start_mem  = memory_get_usage(true);

for ($i = 0; $i < $n; $i++)
{

}

$time = microtime(true) - $start_time;
$mem  = memory_get_usage(true) - $start_mem;

echo "Test 1\t{$time}\t{$mem}\n";

// Duplicate lines 5-16 for each block of code you want to test