Test: foreach key vs. no key

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Result: Discarded

The test labeled "with key" was the faster by 0.0287 seconds, (3.631% faster)

with key 100%

without key 96.369%

The with key test took 0.7625 seconds.
The without key test took 0.7913 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 149,930 loops for a total of 2,998,600 runs.

Line execution difference (0.000010) milliseconds.
Avg difference (1.436) milliseconds per 149,930 loops.
Total difference 28.73 milliseconds for 2,998,600 loops

The iteration variablity for Code 1 was (11.2305) milliseconds and Code 2 was (11.7503) 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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