Result: DiscardedThe test labeled "non-referenced" was the faster by 0.1129 seconds, (8.235% faster)
The non-referenced test took 1.2578 seconds.
The referenced test took 1.3706 seconds.
Each test case ran 20 random code order iterations consisting of 272,269 loops for a total of 5,445,380 runs.
- Line execution difference (0.000021) milliseconds.
- Avg difference (5.644) milliseconds per 272,269 loops.
- Total difference 112.87 milliseconds for 5,445,380 loops
The iteration variablity for Code 1 was (7.0410) milliseconds and Code 2 was (11.0582) 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);