Result: DiscardedThe test labeled "non-referenced" was the faster by 0.0011 seconds, (0.177% faster)
The non-referenced test took 0.6108 seconds.
The referenced test took 0.6119 seconds.
Each test case ran 20 random code order iterations consisting of 137,338 loops for a total of 2,746,760 runs.
- Line execution difference (0.000000) milliseconds.
- Avg difference (0.054) milliseconds per 137,338 loops.
- Total difference 1.08 milliseconds for 2,746,760 loops
The iteration variablity for Code 1 was (3.8704) milliseconds and Code 2 was (3.3883) 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);