Test: foreach $k => $dummy vs. array

Test: foreach $k => $dummy vs. array_keys

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Result: Discarded

The test labeled "$k => $dummy" was the faster by 0.0063 seconds, (0.590% faster)

$k => $dummy 100%

array_keys() 99.41%

The $k => $dummy test took 1.0585 seconds.
The array_keys() test took 1.0647 seconds.

Nitty-Gritty

Each test case ran 20 random code order iterations consisting of 290,816 loops for a total of 5,816,320 runs.

Line execution difference (0.000001) milliseconds.
Avg difference (0.314) milliseconds per 290,816 loops.
Total difference 6.28 milliseconds for 5,816,320 loops

The iteration variablity for Code 1 was (0.9871) milliseconds and Code 2 was (1.2425) milliseconds. The lower and the closer together there values are the more accurate the results are.

Code

The first test, "$k => $dummy", was:

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

The second test, "array_keys()", was:

foreach (array_keys($GLOBALS['dummy']) as $k)
	$k + 1;

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