tests[$name] = $closure;
return $this;
}
//--------------------------------------------------------------------
/**
* Runs through all of the tests that have been added, recording
* time to execute the desired number of iterations, and the approximate
* memory usage used during those iterations.
*
* @param integer $iterations
* @param boolean $output
*
* @return string|null
*/
public function run(int $iterations = 1000, bool $output = true)
{
foreach ($this->tests as $name => $test)
{
// clear memory before start
gc_collect_cycles();
$start = microtime(true);
$start_mem = $max_memory = memory_get_usage(true);
for ($i = 0; $i < $iterations; $i ++)
{
$result = $test();
$max_memory = max($max_memory, memory_get_usage(true));
unset($result);
}
$this->results[$name] = [
'time' => microtime(true) - $start,
'memory' => $max_memory - $start_mem,
'n' => $iterations,
];
}
if ($output)
{
return $this->getReport();
}
return null;
}
//--------------------------------------------------------------------
/**
* Get results.
*
* @return string
*/
public function getReport(): string
{
if (empty($this->results))
{
return 'No results to display.';
}
helper('number');
// Template
$tpl = '';
$rows = '';
foreach ($this->results as $name => $result)
{
$memory = number_to_size($result['memory'], 4);
$rows .= "
| {$name} |
" . number_format($result['time'], 4) . " |
{$memory} |
";
}
$tpl = str_replace('{rows}', $rows, $tpl);
return $tpl . '
';
}
//--------------------------------------------------------------------
}