gistfile1.txt

<?php

$node = node_load(1);
foreach ($node as $field) {
  
}

$start = microtime(TRUE);

for ($i = 0; $i < 1000; $i++) {
  $serialized = serialize(clone $node);
  unserialize($serialized);
}

print round(microtime(TRUE) - $start, 3) . "\n";