Result: DiscardedThe test labeled "$k => $dummy" was the faster by 0.0393 seconds, (3.632% faster)
The $k => $dummy test took 1.0421 seconds.
The array_keys() test took 1.0813 seconds.
Each test case ran 20 random code order iterations consisting of 295,373 loops for a total of 5,907,460 runs.
- Line execution difference (0.000007) milliseconds.
- Avg difference (1.964) milliseconds per 295,373 loops.
- Total difference 39.27 milliseconds for 5,907,460 loops
The iteration variablity for Code 1 was (1.5469) milliseconds and Code 2 was (3.1069) milliseconds. The lower and the closer together there values are the more accurate the results are.
The first test, "$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;