Result: DiscardedThe test labeled "non-referenced" was the faster by 0.0752 seconds, (6.236% faster)
The non-referenced test took 1.1304 seconds.
The referenced test took 1.2056 seconds.
Each test case ran 20 random code order iterations consisting of 286,349 loops for a total of 5,726,980 runs.
- Line execution difference (0.000013) milliseconds.
- Avg difference (3.759) milliseconds per 286,349 loops.
- Total difference 75.18 milliseconds for 5,726,980 loops
The iteration variablity for Code 1 was (6.2492) milliseconds and Code 2 was (8.8165) 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) $GLOBALS['dummy'][$k]++; unset($v);
The second test, "referenced", was:
foreach ($GLOBALS['dummy'] as $k => &$v) $v++; unset($v);