Test: foreach key vs. no key

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Result: Discarded

The test labeled "with key" was the faster by 0.0066 seconds, (0.628% faster)

with key 100%

without key 99.372%

The with key test took 1.0442 seconds.
The without key test took 1.0508 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 274,406 loops for a total of 5,488,120 runs.

Line execution difference (0.000001) milliseconds.
Avg difference (0.330) milliseconds per 274,406 loops.
Total difference 6.60 milliseconds for 5,488,120 loops

The iteration variablity for Code 1 was (2.0979) milliseconds and Code 2 was (1.6827) milliseconds. The lower and the closer together there values are the more accurate the results are.

Code

The first test, "with key", was:

foreach ($GLOBALS['dummy'] as $k => $v)
	$v + array(1);

The second test, "without key", was:

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

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