Result: SavedThe test labeled "array_keys()" was the faster by 0.0123 seconds, (1.325% faster)
The array_keys() test took 0.9179 seconds.
The $k => $dummy test took 0.9302 seconds.
Each test case ran 20 random code order iterations consisting of 229,447 loops for a total of 4,588,940 runs.
- Line execution difference (0.000003) milliseconds.
- Avg difference (0.616) milliseconds per 229,447 loops.
- Total difference 12.32 milliseconds for 4,588,940 loops
The iteration variablity for Code 1 was (2.2397) milliseconds and Code 2 was (2.2040) milliseconds. The lower and the closer together there values are the more accurate the results are.
The first test, "$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;