Result: DiscardedThe test labeled "non-referenced" was the faster by 0.0328 seconds, (2.669% faster)
The non-referenced test took 1.1946 seconds.
The referenced test took 1.2273 seconds.
Each test case ran 20 random code order iterations consisting of 281,591 loops for a total of 5,631,820 runs.
- Line execution difference (0.000006) milliseconds.
- Avg difference (1.638) milliseconds per 281,591 loops.
- Total difference 32.76 milliseconds for 5,631,820 loops
The iteration variablity for Code 1 was (8.7035) milliseconds and Code 2 was (7.8190) milliseconds. The lower and the closer together there values are the more accurate the results are.
The first test, "non-referenced", was:
foreach ($GLOBALS['dummy'] as $k => $v) $v++; unset($v);
The second test, "referenced", was:
foreach ($GLOBALS['dummy'] as $k => &$v) $v++; unset($v);