gistfile1.php

 <?php
 class A {
     public $foo = 1;
     public $bar = 2;
     public $veryverylongattrnamethatisridiculouslylongthankyouautocomplete = 3;
 }

 $a = new A;
 $b = new SplFixedArray(3);

 $b[0] = 1;
 $b[1] = 2;
 $b[2] = 3;

 $c = array(
     1, 2, 3
 );

 $var = null;
 $start = microtime(TRUE);
 for($x=0; $x<20000000; $x++) {
     $a->foo;
     //$a->veryverylongattrnamethatisridiculouslylongthankyouautocomplete;
     //$b[1];
 }
 $duration = microtime(TRUE) - $start;
 echo ($duration*1000)."\n";