Result: DiscardedThe test labeled "referenced" was the faster by 0.0044 seconds, (0.445% faster)
The referenced test took 0.9734 seconds.
The non-referenced test took 0.9778 seconds.
Each test case ran 20 random code order iterations consisting of 249,586 loops for a total of 4,991,720 runs.
- Line execution difference (0.000001) milliseconds.
- Avg difference (0.218) milliseconds per 249,586 loops.
- Total difference 4.35 milliseconds for 4,991,720 loops
The iteration variablity for Code 1 was (2.6811) milliseconds and Code 2 was (2.0796) 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);