Result: DiscardedThe test labeled "non-referenced" was the faster by 0.0404 seconds, (3.594% faster)
The non-referenced test took 1.0847 seconds.
The referenced test took 1.1251 seconds.
Each test case ran 20 random code order iterations consisting of 290,766 loops for a total of 5,815,320 runs.
- Line execution difference (0.000007) milliseconds.
- Avg difference (2.022) milliseconds per 290,766 loops.
- Total difference 40.43 milliseconds for 5,815,320 loops
The iteration variablity for Code 1 was (2.5817) milliseconds and Code 2 was (4.4531) 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);