Result: DiscardedThe test labeled "non-referenced" was the faster by 0.0098 seconds, (0.969% faster)
The non-referenced test took 1.0039 seconds.
The referenced test took 1.0137 seconds.
Each test case ran 20 random code order iterations consisting of 264,583 loops for a total of 5,291,660 runs.
- Line execution difference (0.000002) milliseconds.
- Avg difference (0.491) milliseconds per 264,583 loops.
- Total difference 9.82 milliseconds for 5,291,660 loops
The iteration variablity for Code 1 was (2.3916) milliseconds and Code 2 was (3.1671) 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) $v + 1; unset($v);
The second test, "referenced", was:
foreach ($GLOBALS['dummy'] as $k => &$v) $v + 1; unset($v);