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 "foreach" was (on average) the faster by 0.0113 seconds, (1.704% faster)

foreach 100%

for 98.296%

The foreach test took 0.6512 seconds.
The for test took 0.6624 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 151,951 loops for a total of 3,039,027 runs.

Line execution difference (0.000004) milliseconds.
Avg difference (0.000) milliseconds per 151,951 loops.
Total difference 11.29 milliseconds for 3,039,027 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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