PHP Benchmarks

Performance comparison of PHP code alternatives.

Test: foreach (fcall) vs. foreach ($temp)

Is the array being iterated cached? It could cause some nasty side effects to OOP if it is, but maybe PHP is smart about this.

View test history (2) Run this test again Return to test menu

Result: Saved

The test labeled "foreach (fcall)" was the faster by 0.0353 seconds, (6.286% faster)

foreach (fcall) 100%
foreach ($temp) 93.714%

The foreach (fcall) test took 0.5264 seconds.
The foreach ($temp) test took 0.5618 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 108,780 loops for a total of 2,175,600 runs.

  • Line execution difference (0.000016) milliseconds.
  • Avg difference (1.766) milliseconds per 108,780 loops.
  • Total difference 35.31 milliseconds for 2,175,600 loops

The iteration variablity for Code 1 was (3.5261) milliseconds and Code 2 was (3.5550) milliseconds. The lower and the closer together there values are the more accurate the results are.

Code

The first test, "foreach (fcall)", was:

foreach (array_merge(range(1, 10), range(11, 20), range(21, 30), range(31, 40)) as $v)
	$GLOBALS['dummy2'] = $v;

The second test, "foreach ($temp)", was:

$temp = array_merge(range(1, 10), range(11, 20), range(21, 30), range(31, 40));
foreach ($temp as $v)
	$GLOBALS['dummy2'] = $v;

Running: Linux (x86_64:1 GB) PHP (7.2.15-1+ubuntu16.04.1+deb.sury.org+1)