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.

Run this test again Return to test menu

Result: Discarded

The test labeled "foreach (fcall)" was the faster by 0.0032 seconds, (0.277% faster)

foreach (fcall) 100%
foreach ($temp) 99.723%

The foreach (fcall) test took 1.1563 seconds.
The foreach ($temp) test took 1.1595 seconds.


Each test case ran 20 random code order iterations consisting of 284,215 loops for a total of 5,684,300 runs.

  • Line execution difference (0.000001) milliseconds.
  • Avg difference (0.161) milliseconds per 284,215 loops.
  • Total difference 3.22 milliseconds for 5,684,300 loops

The iteration variablity for Code 1 was (6.9334) milliseconds and Code 2 was (3.9111) milliseconds. The lower and the closer together there values are the more accurate the results are.


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 (