Test: array_walk vs. array_walk

Test: array_walk vs. array_walk_recursive

Does the recursive variant have any benefit over rolling our own recursion?

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Result: Discarded

The test labeled "array_walk()" was the faster by 0.0157 seconds, (3.450% faster)

array_walk() 100%

array_walk_recursive() 96.55%

The array_walk() test took 0.4393 seconds.
The array_walk_recursive() test took 0.455 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 125,249 loops for a total of 2,504,980 runs.

Line execution difference (0.000006) milliseconds.
Avg difference (0.785) milliseconds per 125,249 loops.
Total difference 15.70 milliseconds for 2,504,980 loops

The iteration variablity for Code 1 was (0.7805) milliseconds and Code 2 was (1.1937) milliseconds. The lower and the closer together there values are the more accurate the results are.

Code

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

/*
function foo_manual(&$v)
{
	if (is_array($v))
		array_walk($v, 'foo_manual');
	else
		$v++;
}
*/

array_walk($GLOBALS['dummy'], 'foo_manual');

The second test, "array_walk_recursive()", was:

/*
function foo_auto(&$v)
{
	$v++;
}
*/

array_walk_recursive($GLOBALS['dummy'], 'foo_auto');

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