public function testReport()
{
Timer::$defaultMinDuration = 100;
$report = new Report('Test report', 'Example benchmark.');
$unit = new Unit('String concatenation');
$unit->addClosure(function ($n) {
while ($n--) {
$x = "foobar {$n}";
}
}, '$x = "foobar $n"');
$unit->addClosure(function ($n) {
while ($n--) {
$x = 'foobar ' . $n;
}
}, '$x = \'foobar \' . $n');
$report->unitList->add($unit);
$unit2 = new Unit('String concatenation with varying length');
foreach ($unit->getMethods() as $method) {
$unit2->addMethod($method);
}
$unit2->addParam(new Parameter('x', '$p = \'x\''));
$unit2->addParam(new Parameter('xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx', '$p = \'xxxxx..\''));
$report->unitList->add($unit2);
$report->run();
}
public function testUnit()
{
Timer::$defaultMinDuration = 100;
$unit = new Unit('test');
$unit->addMethod(new Method(function ($n, $cost) {
if ($cost < 10) {
while ($n--) {
$x = $n * 2;
}
} else {
while ($n--) {
$x = $n * 2;
$x = number_format($x);
}
}
}, 'calc', 'calculate stuff'));
$unit->addClosure(function ($n, $cost) {
while ($n--) {
$x = password_hash('xx', PASSWORD_DEFAULT, array('cost' => $cost));
}
}, 'hash', 'password_hash');
$unit->addParam(new Parameter(5, 'easy'));
$unit->addParam(new Parameter(10, 'hard'));
$results = $unit->run();
}
}
$version = $name . ' ' . $version;
}
$report = new Report('Speed comparison of PHP source formatters', '', ['output_dir' => 'benchmark']);
$desc = 'Various open source projects are formatted with common settings.
Each repository is checked out `--hard` once before the benchmark is run.
`.php_cs` and `.php_cs_cache` files are removed to make php-cs-fixer comparable
with other formatters.
You can see the command arguments by clicking on the method.
Versions used:
* `' . implode("`\n* `", $versions) . '`';
$unit = new Unit('Formatting open source projects', $desc);
$phormat = Exec::create('php', 'phormat', '-n', '-s');
$unit->addClosure(function ($n, $parameter) use($phormat) {
while ($n--) {
$phormat->run($parameter);
}
}, 'phormat', "```bash\n\$ " . $phormat->getCommand() . "\n```");
$phpCsFixer = Exec::create('php-cs-fixer', 'fix', '--dry-run', '--level=psr1');
$unit->addClosure(function ($n, $parameter) use($phpCsFixer) {
chdir($parameter);
while ($n--) {
$phpCsFixer->run($parameter);
}
chdir(__DIR__);
}, 'php-cs-fixer PSR-1', "```bash\n\$ " . $phpCsFixer->getCommand() . "\n```");
$phpCsFixer = Exec::create('php-cs-fixer', 'fix', '--dry-run', '--level=psr2');
$unit->addParam(new Parameter($params, 'First of 1000'));
// Add different parameters by changing the needle of the haystack
$params['needle'] = $list[count($list) - 1];
$unit->addParam(new Parameter($params, 'Last of 1000'));
$params['needle'] = '404 Not found';
$unit->addParam(new Parameter($params, 'Not found'));
// Finally add this single unit to the report and run it
$report->unitList->add($unit);
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * */
$sortUnit = new Unit('Searching in a sorted list', <<<'TAG'
If all you have is a sorted list, a binary search will do wonders.
**Assocative arrays** are still your best friend. Instead of sorting by
value, objects are accessed and mapped by value.
A **binary search** makes use of the fact that the list is sorted by the search
needle. The complexity is O(log(n)) with n being the array size.
**Iterative searches** are acceptable for small lists and the complexity is O(n).
Obviously searching in big lists is quite slow unless you're lucky.
TAG
);
$sortUnit->addClosure(function ($n, $p) {
$list = $p['list'];
$needle = $p['needle'];
while ($n--) {
$result = null;
$count = count($list);
for ($i = 0; $i < $count; $i++) {
if ($list[$i] === $needle) {
$result = $i;
