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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Result: Discarded

The test labeled "foreach" was the faster by 0.0101 seconds, (1.571% faster)

foreach 100%
array_map() 98.429%

The foreach test took 0.6345 seconds.
The array_map() test took 0.6446 seconds.


Each test case ran 20 random code order iterations consisting of 133,215 loops for a total of 2,664,300 runs.

  • Line execution difference (0.000004) milliseconds.
  • Avg difference (0.506) milliseconds per 133,215 loops.
  • Total difference 10.12 milliseconds for 2,664,300 loops

The iteration variablity for Code 1 was (9.3052) milliseconds and Code 2 was (7.5076) 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 (