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 0.0113 seconds, (1.082% faster)

foreach 100%

for 98.918%

The foreach test took 1.0367 seconds.
The for test took 1.048 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 264,669 loops for a total of 5,293,380 runs.

Line execution difference (0.000002) milliseconds.
Avg difference (0.000) milliseconds per 264,669 loops.
Total difference 11.34 milliseconds for 5,293,380 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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