Result: DiscardedThe test labeled "referenced" was the faster by 0.0136 seconds, (1.559% faster)
The referenced test took 0.8613 seconds.
The non-referenced test took 0.875 seconds.
Each test case ran 20 random code order iterations consisting of 198,876 loops for a total of 3,977,520 runs.
- Line execution difference (0.000003) milliseconds.
- Avg difference (0.682) milliseconds per 198,876 loops.
- Total difference 13.64 milliseconds for 3,977,520 loops
The iteration variablity for Code 1 was (2.1561) milliseconds and Code 2 was (1.5891) 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);