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 (4) Run this test again Return to test menu

Result: Discarded

The test labeled "foreach (fcall)" was the faster by 0.0619 seconds, (7.521% faster)

foreach (fcall) 100%
foreach ($temp) 92.479%

The foreach (fcall) test took 0.7609 seconds.
The foreach ($temp) test took 0.8228 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 155,014 loops for a total of 3,100,280 runs.

  • Line execution difference (0.000020) milliseconds.
  • Avg difference (3.094) milliseconds per 155,014 loops.
  • Total difference 61.88 milliseconds for 3,100,280 loops

The iteration variablity for Code 1 was (6.6388) milliseconds and Code 2 was (9.2184) 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 (7.2.25-1+ubuntu16.04.1+deb.sury.org+1)