Result: DiscardedThe test labeled "array_keys()" was the faster by 0.0135 seconds, (2.420% faster)
The array_keys() test took 0.5448 seconds.
The $k => $dummy test took 0.5583 seconds.
Each test case ran 20 random code order iterations consisting of 134,735 loops for a total of 2,694,700 runs.
- Line execution difference (0.000005) milliseconds.
- Avg difference (0.676) milliseconds per 134,735 loops.
- Total difference 13.51 milliseconds for 2,694,700 loops
The iteration variablity for Code 1 was (2.7436) milliseconds and Code 2 was (2.1604) milliseconds. The lower and the closer together there values are the more accurate the results are.
The first test, "$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;