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 (1) Run this test again Return to test menu

Result: Discarded

The test labeled "foreach (fcall)" was the faster by 0.0306 seconds, (3.149% faster)

foreach (fcall) 100%
foreach ($temp) 96.851%

The foreach (fcall) test took 0.9425 seconds.
The foreach ($temp) test took 0.9732 seconds.


Each test case ran 20 random code order iterations consisting of 235,271 loops for a total of 4,705,420 runs.

  • Line execution difference (0.000007) milliseconds.
  • Avg difference (1.532) milliseconds per 235,271 loops.
  • Total difference 30.64 milliseconds for 4,705,420 loops

The iteration variablity for Code 1 was (6.2600) milliseconds and Code 2 was (5.6014) 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 (