Result: DiscardedThe test labeled "array_keys()" was the faster by 0.0042 seconds, (0.275% faster)
The array_keys() test took 1.5229 seconds.
The $k => $dummy test took 1.5271 seconds.
Each test case ran 20 random code order iterations consisting of 281,449 loops for a total of 5,628,980 runs.
- Line execution difference (0.000001) milliseconds.
- Avg difference (0.210) milliseconds per 281,449 loops.
- Total difference 4.20 milliseconds for 5,628,980 loops
The iteration variablity for Code 1 was (14.5809) milliseconds and Code 2 was (13.8953) milliseconds. The lower and the closer together there values are the more accurate the results are.
The first test, "$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;