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 (6) saved test runs, The test labeled "array_map()" was (on average) the faster by 0.0358 seconds, (3.629% faster)

array_map() 100%
foreach 96.371%

The array_map() test took 0.9509 seconds.
The foreach test took 0.9867 seconds.


Each test case ran 20 random code order iterations consisting of 229,976 loops for a total of 4,599,527 runs.

  • Line execution difference (0.000008) milliseconds.
  • Avg difference (0.000) milliseconds per 229,976 loops.
  • Total difference 35.81 milliseconds for 4,599,527 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.


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 (