Test: passing classes vs. arrays

Is there any penalty (either way) in passing class objects vs. arrays? Theoretically, they are semantically equivalent.

View test history (3) Run this test again Return to test menu

Result: Discarded

The test labeled "classes" was the faster by 0.0114 seconds, (1.931% faster)

classes 100%

arrays 98.069%

The classes test took 0.5778 seconds.
The arrays test took 0.5891 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 135,672 loops for a total of 2,713,440 runs.

Line execution difference (0.000004) milliseconds.
Avg difference (0.569) milliseconds per 135,672 loops.
Total difference 11.37 milliseconds for 2,713,440 loops

The iteration variablity for Code 1 was (2.5313) milliseconds and Code 2 was (3.8345) milliseconds. The lower and the closer together there values are the more accurate the results are.

Code

The first test, "classes", was:

/*
class Example
{
	var $x;
}

function example_class($x)
{
	$GLOBALS['dummy'] = $x->x;
}

$GLOBALS['test_object'] = new Example();
$GLOBALS['test_object']->x = 42;
*/

example_class($GLOBALS['test_object']);

The second test, "arrays", was:

/*
function example_array($x)
{
	$GLOBALS['dummy'] = $x['x'];
}

$GLOBALS['test_array'] = array();
$GLOBALS['test_array']['x'] = 42;
*/

example_array($GLOBALS['test_array']);

PHP Benchmarks