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 (8) Run this test again Return to test menu

Result: Saved

The test labeled "foreach (fcall)" was the faster by 0.0455 seconds, (3.975% faster)

foreach (fcall) 100%

foreach ($temp) 96.025%

The foreach (fcall) test took 1.0996 seconds.
The foreach ($temp) test took 1.1452 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 239,743 loops for a total of 4,794,860 runs.

Line execution difference (0.000009) milliseconds.
Avg difference (2.276) milliseconds per 239,743 loops.
Total difference 45.52 milliseconds for 4,794,860 loops

The iteration variablity for Code 1 was (7.9383) milliseconds and Code 2 was (7.9157) 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;

PHP Benchmarks