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 (5) Run this test again Return to test menu

Result: Discarded

The test labeled "arrays" was the faster by 0.0114 seconds, (2.301% faster)

arrays 100%
classes 97.699%

The arrays test took 0.4843 seconds.
The classes test took 0.4957 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 128,285 loops for a total of 2,565,700 runs.

  • Line execution difference (0.000004) milliseconds.
  • Avg difference (0.570) milliseconds per 128,285 loops.
  • Total difference 11.40 milliseconds for 2,565,700 loops

The iteration variablity for Code 1 was (1.5748) milliseconds and Code 2 was (0.8412) 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 (7.2.19-1+ubuntu16.04.1+deb.sury.org+1)