Test: foreach vs. for

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

Historical Results

Based on (2) saved test runs, The test labeled "foreach" was (on average) the faster by 0.0031 seconds, (0.350% faster)

foreach 100%

for 99.65%

The foreach test took 0.876 seconds.
The for test took 0.8791 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 220,154 loops for a total of 4,403,080 runs.

Line execution difference (0.000001) milliseconds.
Avg difference (0.000) milliseconds per 220,154 loops.
Total difference 3.08 milliseconds for 4,403,080 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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