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 (2) saved test runs, The test labeled "array_map()" was (on average) the faster by 0.0147 seconds, (1.330% faster)

array_map() 100%
foreach 98.67%

The array_map() test took 1.092 seconds.
The foreach test took 1.1067 seconds.


Each test case ran 20 random code order iterations consisting of 240,552 loops for a total of 4,811,040 runs.

  • Line execution difference (0.000003) milliseconds.
  • Avg difference (0.000) milliseconds per 240,552 loops.
  • Total difference 14.72 milliseconds for 4,811,040 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 (