benchmark of YamlParse vs PHP array

parseConfigBench.php

<?php

require __DIR__.'/../autoload.php';

$app = \Eccube\Application::getInstance(array('output_config_php' => false));

$start = microtime(true);
for ($i = 0; $i < 1000; $i++) {
    $configAll = array();
    $app->parseConfig('constant', $configAll)
        ->parseConfig('path', $configAll)
        ->parseConfig('config', $configAll)
        ->parseConfig('database', $configAll)
        ->parseConfig('mail', $configAll)
        ->parseConfig('log', $configAll)
        ->parseConfig('nav', $configAll, true)
        ->parseConfig('doctrine_cache', $configAll);

}
$end = microtime(true);
print($end - $start);

see also
EC-CUBE/ec-cube#1695 (comment)