Doctrine bench

bench.php

<?php

class Bench
{
    public static $cache;
    public static $cachem;
    
    public function __construct()
    {
            self::$cache = array('set' => true, 'tableize_set' => true);
            self::$cachem = array('tableize' => array('set' => true));
    }

    public function keystring($word)
    {
        $cacheKey = "tableize_" . $word;
        if (!isset(static::$cache[$cacheKey])) {
            static::$cache[$cacheKey] = true;
        }
        return static::$cache[$cacheKey];
    }

    public function keyarray($word)
    {
        if (!isset(static::$cache[$word])) {
            static::$cache[$word] = true;
        }
        return static::$cache[$word];        
    }            

    public function keyarraym($word)
    {
        if (!isset(static::$cachem['tableize'][$word])) {
            static::$cachem['tableize'][$word] = true;
        }
        return static::$cachem['tableize'][$word];        
    }                        
}

$b = new Bench();
$periods = array();
    
$start = microtime(true);
for ($i = 0; $i < 100000; $i++) {
    $b->keystring('set');
}    
$end = microtime(true);
$periods[] = $end - $start;

$start = microtime(true);
for ($i = 0; $i < 100000; $i++) {
    $b->keyarray('set');
}    
$end = microtime(true);
$periods[] = $end - $start;

$start = microtime(true);
for ($i = 0; $i < 100000; $i++) {
    $b->keyarraym('set');
}    
$end = microtime(true);
$periods[] = $end - $start;

$start = microtime(true);
for ($i = 0; $i < 100000; $i++) {
    $b->keystring('not-set');
}    
$end = microtime(true);
$periods[] = $end - $start;

$start = microtime(true);
for ($i = 0; $i < 100000; $i++) {
    $b->keyarray('not-set');
}    
$end = microtime(true);
$periods[] = $end - $start;

$start = microtime(true);
for ($i = 0; $i < 100000; $i++) {
    $b->keyarraym('not-set');
}    
$end = microtime(true);
$periods[] = $end - $start;

var_dump(array_map(
    function ($p) use ($periods) { return $p / $periods[0] * 100; },
    $periods
));

res.txt

array (size=6)
  0 => float 100
  1 => float 70.533381723979
  2 => float 77.080354544914
  3 => float 97.932394930246
  4 => float 72.422337706221
  5 => float 81.855697842132