Result: SavedThe test labeled "$k => $dummy" was the faster by 0.0372 seconds, (6.519% faster)
The $k => $dummy test took 0.5335 seconds.
The array_keys() test took 0.5707 seconds.
Each test case ran 20 random code order iterations consisting of 126,735 loops for a total of 2,534,700 runs.
- Line execution difference (0.000015) milliseconds.
- Avg difference (1.860) milliseconds per 126,735 loops.
- Total difference 37.20 milliseconds for 2,534,700 loops
The iteration variablity for Code 1 was (2.0492) milliseconds and Code 2 was (2.1371) milliseconds. The lower and the closer together there values are the more accurate the results are.
The first test, "$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;