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 (2) Run this test again Return to test menu

Result: Saved

The test labeled "array_map()" was the faster by 0.0039 seconds, (0.439% faster)

array_map() 100%
foreach 99.561%

The array_map() test took 0.8839 seconds.
The foreach test took 0.8877 seconds.


Each test case ran 20 random code order iterations consisting of 187,141 loops for a total of 3,742,820 runs.

  • Line execution difference (0.000001) milliseconds.
  • Avg difference (0.195) milliseconds per 187,141 loops.
  • Total difference 3.90 milliseconds for 3,742,820 loops

The iteration variablity for Code 1 was (3.1874) milliseconds and Code 2 was (3.0626) milliseconds. The lower and the closer together there values are the more accurate the results are.


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 (