proof of concept quick and simple php benchmarking and profiling

gistfile1.aw

<?php

function ticks_counter ($return = null)
{
	static $ticks;

	if ($return) {
		return $ticks;
	}

	$ticks++;
}

declare (ticks = 1);
register_tick_function('ticks_counter');

# pmu: Peak Memory Usage
#  mu: Memory Usage
# cpu: CPU Time
#  wt: Wall Time
#  ct: 

# exclusive wall times, memory usage, CPU times and number of calls for each function.  


$BENCHMARKS = array();
$RUNNING = false;

function bench ($name)
{
	global $BENCHMARKS, $RUNNING;

	if ($RUNNING) {
		throw new Exception('A benchmark is already running');
	}

	xhprof_enable(XHPROF_FLAGS_CPU | XHPROF_FLAGS_MEMORY);

	$id = count($BENCHMARKS);
	$BENCHMARKS[$id] = array(
		'name'=>$name,
		'id'=>$id,
		'files'=>get_included_files(),
		'ticks'=>ticks_counter(true)
	);

	$running = $id;

	return $id;
}

function endbench ($id)
{
	global $BENCHMARKS;

	if (!isset($BENCHMARKS[$id])) {
		throw new Exception('benchmark #' . $id . ' not found in stack');
	}

	$bench = $BENCHMARKS[$id];

	$ticks = ticks_counter(true);
	$xhprof = xhprof_disable();
	$RUNNING = false;
	$xhprof = end($xhprof);

	$included = array_diff(get_included_files(), $bench['files']);

	foreach (array('wt', 'cpu') as $k) {
		$xhprof[$k . '_milli'] = $xhprof[$k] > 0 ? $xhprof[$k] / 1000 : 0;
		$xhprof[$k . '_sec'] = $xhprof[$k] > 0 ? $xhprof[$k] / 1000000 : 0;
	}

	foreach (array('mu', 'pmu') as $k) {
		$xhprof[$k . '_kb'] = $xhprof[$k] > 0 ? $xhprof[$k] / 1024 : 0;
		$xhprof[$k . '_mb'] = $xhprof[$k] > 0 ? $xhprof[$k] / 1024 / 1024 : 0;
	}
	
	return array(
		'ticks'=>$ticks - $bench['ticks'],
		'included_files'=>$included,
		'xhprof'=>$xhprof
	);
}

$id = bench('test');

# ... code

var_dump(endbench($id));