PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: array_walk vs. array_walk_recursive

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

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Historical Results

Based on (14) saved test runs, The test labeled "array_walk()" was (on average) the faster by 0.0178 seconds, (2.521% faster)

array_walk() 100%
array_walk_recursive() 97.479%

The array_walk() test took 0.6874 seconds.
The array_walk_recursive() test took 0.7052 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 173,008 loops for a total of 3,460,150 runs.

  • Line execution difference (0.000005) milliseconds.
  • Avg difference (0.000) milliseconds per 173,008 loops.
  • Total difference 17.78 milliseconds for 3,460,150 loops

The iteration variablity for Code 1 was (0.0000) milliseconds and Code 2 was (0.0000) 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');

Running: Linux (x86_64:1 GB) PHP (7.2.19-1+ubuntu16.04.1+deb.sury.org+1)