Result: DiscardedThe test labeled "$k => $dummy" was the faster by 0.0036 seconds, (0.533% faster)
The $k => $dummy test took 0.6657 seconds.
The array_keys() test took 0.6693 seconds.
Each test case ran 20 random code order iterations consisting of 152,119 loops for a total of 3,042,380 runs.
- Line execution difference (0.000001) milliseconds.
- Avg difference (0.178) milliseconds per 152,119 loops.
- Total difference 3.57 milliseconds for 3,042,380 loops
The iteration variablity for Code 1 was (5.1813) milliseconds and Code 2 was (4.4450) milliseconds. The lower and the closer together there values are the more accurate the results are.
The first test, "$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;