Result: DiscardedThe test labeled "non-referenced" was the faster by 0.0069 seconds, (0.584% faster)
The non-referenced test took 1.1723 seconds.
The referenced test took 1.1792 seconds.
Each test case ran 20 random code order iterations consisting of 274,631 loops for a total of 5,492,620 runs.
- Line execution difference (0.000001) milliseconds.
- Avg difference (0.345) milliseconds per 274,631 loops.
- Total difference 6.89 milliseconds for 5,492,620 loops
The iteration variablity for Code 1 was (7.3460) milliseconds and Code 2 was (9.7749) 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);