PHP Benchmarks

Performance comparison of PHP code alternatives.

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 (11) Run this test again Return to test menu

Result: Discarded

The test labeled "arrays" was the faster by 0.0042 seconds, (0.690% faster)

arrays 100%
classes 99.31%

The arrays test took 0.6059 seconds.
The classes test took 0.6101 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 136,389 loops for a total of 2,727,780 runs.

  • Line execution difference (0.000002) milliseconds.
  • Avg difference (0.210) milliseconds per 136,389 loops.
  • Total difference 4.21 milliseconds for 2,727,780 loops

The iteration variablity for Code 1 was (2.3422) milliseconds and Code 2 was (2.0572) 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']);

Running: Linux (x86_64:1 GB) PHP (7.2.15-1+ubuntu16.04.1+deb.sury.org+1)