Test: foreach vs. for

Note that this isn't helpful unless you have ascending int keys.

Historical Results

Based on (1) saved test runs, The test labeled "for" was (on average) the faster by 0.0022 seconds, (0.477% faster)

for 100%

foreach 99.523%

The for test took 0.4657 seconds.
The foreach test took 0.468 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 108,625 loops for a total of 2,172,500 runs.

Line execution difference (0.000001) milliseconds.
Avg difference (0.000) milliseconds per 108,625 loops.
Total difference 2.23 milliseconds for 2,172,500 loops

The iteration variablity for Code 1 was (0.0000) milliseconds and Code 2 was (0.0000) milliseconds. The lower and the closer together there values are the more accurate the results are.

Code

The first test, "foreach", was:

foreach ($GLOBALS['dummy'] as $v)
	$v[0] + 1;

The second test, "for", was:

for ($k = 0, $n = count($GLOBALS['dummy']); $k < $n; $k++)
	$GLOBALS['dummy'][$k][0] + 1;

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