Simple PHP benchmark class

benchmark.php

<?php

define('SYSTEM_START_TIME', microtime(TRUE));
define('SYSTEM_START_MEMORY', memory_get_usage());

register_shutdown_function('_usage');

function _usage()
{
	if(PHP_SAPI !== 'cli')
	{
		print '<div style="font-size: 14px; border: 1px solid #ddd; background: #fff; padding: 1em; margin: 1em;">';
	}

	print round(microtime(TRUE) - SYSTEM_START_TIME, 6). " ms<br />\n";
	print number_format(memory_get_usage() - SYSTEM_START_MEMORY). " bytes<br />\n";
	print number_format(memory_get_usage()) ." bytes (process)<br />\n";
	print number_format(memory_get_peak_usage()). " bytes (peak process)<br />\n";

	print "\n<pre>\n". print_r(get_included_files(), TRUE) . "</pre>\n";

	if(PHP_SAPI !== 'cli')
	{
		print '</div>';
	}

	print "\n";
}

// Usage: require('benchmark.php');