Result: DiscardedThe test labeled "non-referenced" was the faster by 0.0407 seconds, (7.520% faster)
The non-referenced test took 0.5009 seconds.
The referenced test took 0.5417 seconds.
Each test case ran 20 random code order iterations consisting of 128,718 loops for a total of 2,574,360 runs.
- Line execution difference (0.000016) milliseconds.
- Avg difference (2.037) milliseconds per 128,718 loops.
- Total difference 40.73 milliseconds for 2,574,360 loops
The iteration variablity for Code 1 was (3.1742) milliseconds and Code 2 was (5.3190) 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);