Test: foreach vs. for

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

Historical Results

Based on (3) saved test runs, The test labeled "for" was (on average) the faster by 0.0034 seconds, (0.502% faster)

for 100%

foreach 99.498%

The for test took 0.6746 seconds.
The foreach test took 0.678 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 177,550 loops for a total of 3,551,007 runs.

Line execution difference (0.000001) milliseconds.
Avg difference (0.000) milliseconds per 177,550 loops.
Total difference 3.40 milliseconds for 3,551,007 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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