Test: create_function vs. func callback

Using a pre-created function, is there any penalty in calling it versus a regular free function using a callback?

View test history (4) Run this test again Return to test menu

Result: Discarded

The test labeled "regular callback" was the faster by 0.0075 seconds, (0.555% faster)

regular callback 100%

create_function() 99.445%

The regular callback test took 1.3431 seconds.
The create_function() test took 1.3506 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 286,888 loops for a total of 5,737,760 runs.

Line execution difference (0.000001) milliseconds.
Avg difference (0.375) milliseconds per 286,888 loops.
Total difference 7.50 milliseconds for 5,737,760 loops

The iteration variablity for Code 1 was (7.2746) milliseconds and Code 2 was (7.9569) milliseconds. The lower and the closer together there values are the more accurate the results are.

Code

The first test, "create_function()", was:

/*
$GLOBALS['dummy'] = create_function('', '
	$x = 0;
	$x += 5;

	if ($x >= 5)
		$x = 0;

	$x;
	$x;');
*/

$GLOBALS['dummy']();

The second test, "regular callback", was:

/*
function dummy()
{
	$x = 0;
	$x += 5;

	if ($x >= 5)
		$x = 0;

	$x;
	$x;
}
$GLOBALS['dummy_cb'] = 'dummy';
*/

$GLOBALS['dummy_cb']();

PHP Benchmarks