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?

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Historical Results

Based on (5) saved test runs, The test labeled "array_map()" was (on average) the faster by 0.0141 seconds, (2.709% faster)

array_map() 100%
foreach 97.291%

The array_map() test took 0.5073 seconds.
The foreach test took 0.5214 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 137,487 loops for a total of 2,749,740 runs.

  • Line execution difference (0.000005) milliseconds.
  • Avg difference (0.000) milliseconds per 137,487 loops.
  • Total difference 14.12 milliseconds for 2,749,740 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_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 (7.2.19-1+ubuntu16.04.1+deb.sury.org+1)