PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: array_map vs. foreach

Is there a benefit to using array_map() over a simple foreach?

View test history (17) Run this test again Return to test menu

Result: Discarded

The test labeled "array_map()" was the faster by 0.0186 seconds, (1.714% faster)

array_map() 100%
foreach 98.286%

The array_map() test took 1.0643 seconds.
The foreach test took 1.0829 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 256,532 loops for a total of 5,130,640 runs.

  • Line execution difference (0.000004) milliseconds.
  • Avg difference (0.928) milliseconds per 256,532 loops.
  • Total difference 18.57 milliseconds for 5,130,640 loops

The iteration variablity for Code 1 was (3.3630) milliseconds and Code 2 was (3.8475) milliseconds. The lower and the closer together there values are the more accurate the results are.

Code

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

/*
function foo($v)
{
	return $v * 2;
}
*/

$array = array_map('foo', $GLOBALS['dummy']);

The second test, "foreach", was:

$array = array();
foreach ($GLOBALS['dummy'] as $k => $v)
	$array[$k] = $v * 2;

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